, England (UK) as the barriers rise]] , US]] (St. Andrews Cross) to warn road users that these level crossings have no barriers whatsoever. This level crossing design is used in Slovenia.]] A level crossing (UK and Commonwealth), Railway Crossing (Canada and Australia) or Railroad or Grade Crossing (U.S.A.) is an intersection where a railway line crosses a road or path at the same level, as opposed to the railway line crossing over or under using a bridge or tunnel. The term also applies when a light rail line with separate right-of-way or reserved track crosses a road in the same fashion. Other names include railway crossing, grade crossing, road through railroad, railroad crossing, and train crossing.
HistoryEarly level crossings had a flagman in a nearby booth who would, on the approach of a train, wave a red flag or lantern to stop all traffic and clear the tracks. Manual or electrical closable gates that barricaded the roadway were later introduced, intended to be a complete barrier against intrusion of any road traffic onto the railway. In the early days of the railways much road traffic was horsedrawn or included livestock, requiring a full barrier crossing the entire width of the road. When opened to allow road users to cross the tracks, the gates were swung across the width of the railway, preventing any pedestrians or animals getting onto the tracks. The first US patent for such crossing gates was awarded on 27 August 1867, to J. Nason and J. F. Wilson, both of Boston. Later, as motor vehicles appeared, this type of barrier became less effective, while the need for a barrier to livestock diminished dramatically. Many countries therefore replaced the fully gated crossings with weaker but more-visible barriers, and relied upon road users obeying the associated warning signals to stop.
SafetyRailroad trains have a much larger mass relative to their braking capability, and thus a far longer braking distance than road vehicles. In general, trains do not stop at level crossings but rely on vehicles and pedestrians to clear the tracks in advance. Level crossings constitute a significant safety concern internationally. On average, each year 400 people are killed in the European Union and over 300 in the United States in level crossing accidents. Collisions can occur with vehicles as well as pedestrians; pedestrian collisions are more likely to result in a fatality. Among pedestrians, young people (5–19 years), older people (60 years and over) and males are considered to be high risk users. As far as warning systems for road users are concerned, level crossings either have "passive" protection, in the form of various types of warning signs, or " active" protection, using automatic warning devices such as flashing lights, warning tones and boom gates. Fewer collisions take place at level crossings with active warning systems. Today, radar sensor systems for automatic level crossing free detection are a cheap way to improve safety of level crossings. At railway stations, a pedestrian level crossing is sometimes provided to allow passengers to reach other platforms in the absence of an underpass or bridge. Where third rail systems have level crossings, there is a gap in the third rail over the level crossing, but this does not interrupt the power supply to trains since they have current collectors on multiple cars.
Crossings around the world
AsiaAll Indonesia level crossings are operated automatically and commonly uses sirens in place of conventional bells, but level crossings in Thailand, and Malaysia are still largely manually operated, where the barriers are lowered using a manual switch when trains approach. A significant number of crossings are without barriers. Railway electrification in Malaysia has gradually eliminated level crossings in Peninsular Malaysia, replacing those along nearly all upgraded lines with large overhead viaducts or deep underground tunnels, and simply cutting off non-essential crossings outright. Level crossings used to exist along the KTM railway line in Singapore, but these were removed after the closure of Tanjong Pagar Railway Station, and the moving of the KTM railway station to Woodlands Train Checkpoint. But there are still some that are used on the line between Port Klang - Westport (Pulau Indah). However, it seems like only the level crossing near Port Klang Komuter Station has the barrier.
Chinain Beijing, China]] Speed up campaigns have largely eliminated many crossings on heavily used trunk main lines though some still do exist. Most at-grade crossings in China are for smaller industrial spur and access lines which may or may not have crossing gates.
Hong KongMost of Hong Kong's railway network is either underground or on elevated viaducts, meaning that level crossings are rare. However, level crossings continue to exist on the MTR Light Rail network, and one such level crossing was the site of a level crossing accident in 1994.
JapanAs of 2011, there are in total about 34,000 level crossings in Japan. Many rail lines in urban areas have been changed to viaduct or underground tracks, and the number of level crossings has decreased. Similarly to United States school buses, but unlike many other countries, cars must stop before proceeding over a level crossing in Japan, as required by the Road Traffic Act. On some busy rail lines in Tokyo, Osaka and Nagoya, so many trains pass that some level crossings are almost always closed. In some cases more than 50 trains pass in an hour and the crossing opens only two minutes during that interval, causing serious traffic congestion and inconvenience.() This could be rectified by eliminating level crossings.
TaiwanAs most railways in Taiwan were built during Japanese administration, railway level crossings remain very common, though many urban crossings have been eliminated when the railroads have been moved underground, e.g. segments of the Western Line in Taipei City, or abolished, e.g. the former TRA Tamsui Line that is now the Taipei Metro Tamsui Line with no level crossings. The Act Governing the Punishment of Violation of Road traffic Regulations () prescribes fines for drivers and pedestrians who commit certain classes of violations in regards to level crossings; these include disobeying flagmen, insisting to cross while a crossing's signals are active or when the gate is being lowered, crossing a passive crossing without stopping beforehand, and overtaking, making a U-turn, backing up, stopping or parking on a railway level crossing in a vehicle. Pedestrians can be fined 1200 new Taiwan dollars for a violation, drivers of non-motorized vehicles such as bicycles can be fined between 1200 to 2400 dollars, and drivers of motor vehicles can be fined up to of 6000 to 12000 new Taiwan dollars for a violation. If an accident occurs, the driver's license can also be revoked for a minimum of six years. Accidents at railway level crossings remain a very serious concern. The Taiwan Railway Administration alone has hundreds of level crossings along its routes of slightly more than . In average, there is a level crossing in less than . An emergency button is installed on every level crossing in the country, allowing members of the public to report emergencies at a crossing to authorities, such as stalled vehicles or other obstacles.
BelgiumAt a level crossing, any overhead electric power cables must also cross. This led to a conflict where a mainline railway that crossed one of the country's once extensive interurban tram lines ( vicinal or buurtspoorweg) was electrified. In at least one location, this led to the tram overhead being dismantled. Automatic level crossings in Belgium have two red lights, a "moon-white" light, electronic (previously mechanical) bells and (usually) barriers. The white light flashes for half a second at regular intervals to inform drivers and pedestrians that they can cross the level crossing, and that the signal is in working order. In some cases the white light is absent; the Belgian traffic law of 1975 does not cover that situation. The bells ring until the barriers are fully lowered and then stop. If barriers are absent the bell continues ringing throughout.
Czech RepublicLevel crossings in Czech Republic use a sign on the lights that reads "Pozor Vlak" ("Attention: Train") to warn people of a train crossing. During modernization, many level crossings have been replaced with smaller variants, only a few of the large crossings which use large lights remains in use today. Most level crossings have a white light that flashes until the red lights flash and usually a yellow outline surrounding the crossbucks for increased visibility during nighttime.
Finland, Finland]] In Finland, level crossings with warning lights have the more common red light(s) and a white light that flashes except when the red light(s) flash. Most, but not all, crossings with lights also have barriers. Full-length barriers are usually used only for pedestrian and bicycle lanes. Half-length barriers are used for motor roads, to avoid the risk of a vehicle being trapped on the tracks between the barriers. Bells begin to ring when the red lights start flashing and usually stop when the barriers have come down. Red-and-yellow crossbuck is used on both controlled and uncontrolled level crossings. If there are two or more tracks, the lower part of the cross is doubled. Only minor agricultural crossings might have no signs at all. On bigger roads there are usually also approach signs as seen in the picture. Finnish level crossings are the sixth safest in Europe. Finland's state railway system has almost 3000 level crossings, according to TraFi. In Finland over the course of railway history many level crossing accidents have occurred, in comparison to other Scandinavian countries. In Finland the maximum speed for trains on the rails with level crossings is 140 km/h.
GermanyLevel Crossings in Germany are often called "Bahnübergang" (German for Railroad Crossing). These crossings are different than other level crossings throughout Europe (with a few exceptions). These type of crossings uses a yellow/red light and a bell/alarm (some crossings do not have any bells or alarms) to indicate that the crossing is active. When active a yellow light flashes, indicating anyone to slow down and stop then it is followed by a red light that stays lit until the train s have cleared the tracks. These type of crossings are also used in Austria and some parts of Netherlands Most level crossings usually have a lightning symbol on the crossbucks. These symbols indicate that the railroad is electrified with overhead wires.
ItalyLevel crossings in Italy, much as in the rest of Europe, can be manned, unmanned, manual, or automated. In the Italian highway code, level crossings are called "Passaggi a Livello", often abbreviated to "P/L" on vertical and horizontal road signage.
NetherlandsMost level crossings have half barriers and bells. Those for pedestrians with an active warning system have full barriers. Three level crossings are operated remotely by staff from a traffic control center, using cameras; these have full barriers and no bells. Two level crossings for vehicles have full barriers, with a system to detect a vehicle been trapped; in this case the exit barriers are opened. Crossings with little road traffic and/or little rail traffic have no alarm, just warning signs. There are no level crossings where trains routinely run at over 140 km/h. Warning lights and bells are activated when the train is about 1 km before the crossing, depending on line speed. 5 seconds later the barriers start closing, which takes about 10 seconds. When the barriers have closed, the bells are often set less loud. Lights and bells are stopped when the barriers have raised again. As passive warning signs there are red and white striped fences, red and white saltires for single tracks (doubled in case of two or more tracks) and sometimes advanced warning signs at 70, 140 and 210 metres. When there is a station shortly before the level crossing and an intervening signal, the signal may remain red and the crossing open when the train approaches the station. Only after some time the crossing closes, after which the signal is pulled.
NorwayFrom 1998-2008 the Norwegian rail administration (Jernbaneverket) removed about 1000 level crossings, leaving about 3500 still in use. is the maximum speed for trains over level crossings. In addition, Oslo's and Bergen's tram or light rail systems have some level crossings. Most lines on Oslo's metro (T-banen) are free of them. Most of the level crossings were removed from the old suburban railways in the western parts of the city, when the lines were upgraded to metro standard, but some crossings are retained on the Holmenkollen Line.
Sweden, Sweden]] In Sweden there are 8,500 level crossings, according to Trafikverket, the Swedish Transport Administration (former Banverket, Swedish Rail Administration). On public roads they have light signals with or without gates. On private roads there are level crossings without signals. Most accidents occur on crossings without gates. For many years there have been activities to reduce the number of accidents, usually by adding gates, or adding light signals if there were none. On the main lines many bridges have been built, and also anywhere a new road or new railway has been built. Still there are some level crossings left on the main lines. A train speed of 200 km/h is allowed in Sweden over level crossings, if there are gates and an obstacle detection unit. This unit detects cars on the track and prevents the gates from closing fully and stops the train. According to Trafikverket in 15 years there has only been one serious collision between a car and a train on such a level crossing, when a car ran through the gates just in front of the train.
United Kingdom, Lincolnshire, England (UK) which in 2012 was upgraded from a gate crossing]] , Lincolnshire, England (UK)]] , North East Lincolnshire, England (UK)]] , Cambridgeshire, England (UK) being manually operated by the signalman. This type of crossing is slowly becoming rarer as they are being either closed or replaced by modern automatic crossings]] Britain's first automatically operated level crossing came into operation at Spath near Uttoxeter in Staffordshire in May 1961. There were 8,200 level crossings in the UK in 2005, of which 1,600 were road crossings. This number is gradually being reduced as the risk of accident at level crossings is considered high. The director of the UK Railway Inspectorate commented in 2004 that "the use of level crossings contributes the greatest potential for catastrophic risk on the railways." Bridges and tunnels are now favoured, and there is a commitment on the part of UK rail authorities not to build new level crossings, and to reduce the number of existing level crossings. The cost of making significant reductions, other than by simply closing the crossings, is substantial; some commentators argue that the money could be better spent. Some 6500 crossings were user-worked crossings or footpaths with very low usage. The removal of crossings can also improve train performance as some crossings have low rail speed limits enforced on them to protect road users. In fact, between 1845 and 1933,Railways Clauses Consolidation Act 1845, s.48 there was a speed limit on level crossings of turnpike roads adjacent to stations for lines whose authorising Act of Parliament had been consolidated in the,Railways Clauses Consolidation Act 1845 although this limit was at least sometimes (and possibly often) disregarded.Attorney General v London & North Western Railway Co 1900 1 QB 78The requirement that trains travel at 4mph across some level crossings was abolished by the Road and Rail Traffic Act 1933, Sch 3. In the United Kingdom, major crossings were normally situated within easy sight of a signal box, and usually directly adjacent to the signal box, to ensure that the signalman could verify that the road was clear before allowing a train onto the crossing. The traditional form of road crossing on British railways from the mid-19th century consisted of four wooden gates (two on each side of the railway). These prevented road traffic from crossing when closed, and when open lay across the railway to prevent horses and livestock inadvertently escaping from the road to the railway. Many gated crossings have been replaced by lifting barriers, which are easier to mechanise. "Full barriers" consist of barriers each side of the track which block the full width of the road, and "half barriers" consist of a single arm each side of the road, which block only oncoming traffic. Half barriers were considered to have an advantage as motorists are less likely to be stranded on the crossing and unable to exit, but cases where impatient motorists have driven around the barriers have raised safety concerns. Video cameras are now often used at crossings to allow the human operator to be some distance from the crossing. On lightly-used railways many crossings are sited next to station stops or other stopping points, and are crew operated. The guard pushes a plunger to operate the crossing. On completion of the crossing sequence, an indicator light permits the train to proceed if the crossing is observed by the train driver to be clear. After the train has cleared the crossing, it re-opens to road traffic. In Ireland, instead of an open crossing there may be manually-operated gates, which the motorist must open and close. These have significant risks, as they are unsafe to use without a knowledge of the train timetable; motorists may be instructed to telephone the railway signaller, but may not always do so. To ensure that the barriers are noticed and to draw attention, public road crossings are fitted with flashing lights plus a warning bell, siren or a voice sounder to warn pedestrians that a train is approaching. Some crossings also have telephones which connect to the relevant signal box, so that in case of an emergency, or a large slow moving vehicle wanting to use the crossing, the signalman's attention can be drawn promptly to the hazard and action can be taken. Some "automatic open crossings", with warning lights and bells but no barriers, have been introduced, but their expansion was largely halted after the Lockington rail crash. Some smaller crossings, particularly pedestrian crossings on low-speed lines, have only a warning sign and raised pathway across the track itself. In November 2004, there were two major accidents on UK level crossings: one involved a car driver committing suicide, who caused the death of seven people ( Ufton Nervet rail crash); another involved a train carrying 50 school children; this resulted in no fatalities but a number of injuries. These incidents have increased efforts to review the placing of level crossings and to eliminate them where this is practicable. In the UK it has also been suggested that cameras similar to the type used to detect drivers who run traffic lights be deployed at level crossings, and that penalties for ignoring signals should be much more severe. UK has few level crossing types: Full list of types: AOCL - Automatic Open Crossing Locally Monitored AHB - Automatic Half Barrier ABCL - Automatic Barrier Crossing Locally Monitored MCB - Manually Controlled Barriers MCG - Manually Controlled Gates UWC - User Worked Crossing TMO - Trainman Operated Crossing MWL - Miniature Warning Lights AOCL functions like normal ungated crossing, amber lights turn on for 3 seconds, light turns off and red lights start to flash, white flashing light indicating that the crossing is working on the track side is activated. ABCL functions like AOCL but with barriers. AHB functions like North American crossings do, amber light turns on for 3 seconds, light turns off, red lights start to flash, barrier lowers. The crossing operation is superivsed by a signaller who has indications. MCB known as full barrier crossing functions like this, amber lights turn on for 3 seconds, light turns off, red lights start to flash, left barrier lowers, after left barrier fully lowered, right barrier lowers, when all barriers are lowered the alarm stops. MCG are known as old manually operated gates. They are operated either by signaller, crossing keeper or traincrew, by wheel, by hand or by motor. UWC are user operated level crossings, they may have phones that the user needs to use before crossing the railway, others may not have phones and users have to look both ways, the crossings normally have gates shut and the gates open opposite the railway so if the gates are left open it will not foul the railway, sometimes they have barriers operated by a pump or motor. TMO known as traincrew operated crossings are operated by traincrew, those crossings normally have gates shut across the railway like MCG does, sometimes those crossings have barriers. The crossing is marked by a stop board instructing to open crossing gates or operate barriers. MWL are known as miniature stop lights are red and green lights automatically operated by passage of trains, those lights may be at UWC or footpath crossings. British Transport Police typically prosecute motorists who jump the barriers, for either trespass or failing to conform with a traffic signal. A particular problem has been that the responsibility for road safety at crossings is entirely outside the control of the railways. In 2006 there were legal proposals to permit Network Rail to be involved in the road side safety of crossings. This would allow the introduction of anti-slip surfaces and also barriers to prevent motorists driving around crossing arms and, it is hoped, reduce the number of crossing-related deaths. Network Rail is pursuing a policy of closing level crossings at the rate of over 100 a year in the interests of safety, and replacing them with road bridges or footbridges. The number of level crossings on rail lines controlled by Network Rail went from 7,937 in 2003-04 to 6,322 on 19 January 2014.
=Pedestrian crossings= The use of pedestrian crossings at stations is now rare in the UK, although in the past it was common for passengers to walk across the line between platforms. It is still common in many other countries, and on lines with less traffic. At Settle, for example, before the footbridge was installed in the 1990s, while passengers from Leeds walked across the line the driver's kettle was topped up with hot water. With a few exceptions, such as at Carmarthen, the remaining such crossings are on heritage railways or are used to let passengers who cannot climb stairs to the footbridge move between platforms.For the episode of British motoring television programme Top Gear on 25 February 2007, Network Rail staged an incident in which a locomotive was driven into a Renault Espace at around to graphically illustrate the dangers of "running the risk" (see British Rail Class 31 in the media). "Modular" level crossing barriers were considered by Network Rail when they introduced a new modular building system in 2008. Being modular, they can be assembled and installed in just a few hours.
Canada, Quebec, Canada]] Grade crossing protection practices in Canada are virtually identical to those in the United States (see below) using the same alternating flashing red lights and gate arms. The only significant differences are the crossbuck signs, which have no wording but are white with a red outline; the supplemental sign to indicate the number of tracks, which has an image of a track instead of the word "TRACKS", and has the number and track image in either red (usually for CN rail lines) or black (for CP rail lines); and the advance-warning sign, which is a yellow diamond shape with a diagram of a track crossing a straight segment of road (similar to a crossroads sign, except that the horizontal road is replaced by a track). Before changes in regulations mandated bilingual (English and French) or no-wording signs, crossbucks were nearly identical to those in the US, except that they would read "Railway Crossing" instead of "Railroad Crossing." The red lights also flash a little faster than in the United States.
MexicoMexico has also begun to install US-style crossing signals on some of its KCS de Mexico, Ferromex, & Ferrosur rail lines. Although the majority of rail crossings in Mexico remain with just a crossbuck and unsignalled. The crossing devices are very similar to the US models although sporting larger lights; they read "Cruce de ferrocarril", "Crucero ferrocarril", or "Cuidado con el tren"; the majority are solar operated, and the lights flash faster than the US signals. Unfortunately, these devices are easy targets for vandals as they steal their components such as gate motors and solar panels. In many cases the gates do not lower due to vandalism or lack of maintenance. In some cases due to the lack of maintenance, the lights do not turn on at all. The rail companies, which by law are required to maintain the crossing signals, take little to no action in maintaining these devices and the majority remain unmaintained, posing a threat to drivers.
United Statessign in the US, while in Canada, the sign is wordless and white with red trim. The road appears to make a turn so that it crosses the railroad at an angle closer to 90 degrees.]]
=Crossing identification= Every crossing, whether above grade, below grade, or at grade, is required to be assigned a unique identifier which is a six-digit number and a trailing letter used as a checksum. This identifier is called a Grade Crossing Number, and is usually posted with a sign or sticker on the sign or equipment. This allows a particular crossing anywhere in the United States to be precisely identified as to its exact location in the event of an incident involving that crossing.
=Traffic control devices= All public crossings in the United States are required to be marked by at least a crossbuck. The 2009 Manual on Uniform Traffic Control Devices requires passive crossings (crossings without actuated flashing lights or gates) to have either stop signs or yield signs in addition to the crossbuck, unless a flagger will stop traffic every time a train approaches. Normally a yield sign is used, unless it is determined that all vehicles should stop at the crossing, such as a location with poor sight distance. All passive crossings must be upgraded to meet this standard by December 31, 2019. If the crossing has more than one railroad track, the crossbuck is required to have a small sign beneath it denoting the number of tracks. As traffic on the road crossing or the rail crossing increases, safety features are increased accordingly. More heavily trafficked crossings have "automatic warning devices" (AWDs), with alternately flashing red lights to warn automobile drivers and a bell to warn pedestrians. Additional safety is attained through crossing gates that block automobiles' approach to the tracks when activated. Increasingly, crossings are being fitted with four-quadrant gates to prevent circumventing the gates. Operation of a typical AWD-equipped railroad crossing in the United States is as follows:
- About 30 seconds before arriving at the crossing, the train trips a track circuit near the crossing, triggering the crossing signals. The lights begin to flash alternately, and a bell (or bells) mounted at the crossing begins ringing. After several seconds of flashing lights and ringing bells, the crossing gates (if equipped) begin to lower, which usually takes 5–10 seconds. Some AWDs silence the bell once the gates are fully lowered (typically seen on most Norfolk Southern and CSX crossings); most continue ringing the bells throughout ( Union Pacific, BNSF Railway). Some crossings will not sound the bell at all after dark in the case that it is installed near a residential area. The lights continue to flash throughout regardless.
- About 15–20 seconds before arriving at the crossing, the train begins ringing its bell and sounding its horn in accordance with NORAC rule 14L or GCOR rule 5.8.2(7): two longs, one short, and one long. These are prolonged or repeated until the engine occupies the crossing. If the AWD is equipped with a horn in accordance with FRA Quiet Zone rules, the AWD may provide the whistle signal instead of the train; however, the train is required to ring its bell regardless.
- After the train has cleared the crossing, the bells (if silenced) may begin ringing again (such as the Florida East Coast Railway), and the gates (if equipped) begin to rise. Once the gates have completely risen back to their fully raised position, all warning signals, including the lights and bells, are suppressed.
- The bell begins ringing when the lights begin flashing and stops when the gates have completely lowered.
- The bell begins ringing when the lights begin flashing and stops when the gates begin to go up following the passing of the train.
- The bell begins ringing when the lights begin flashing and stops when the gates have completely lowered, and then resumes ringing when the gates begin to go up, until the gates have returned to their original position.
- The final, and most common, practice is for the bells to begin ringing when the lights begin flashing and continue until the gates have gone up after the train passes.
=Locomotive equipment= In the United States and in countries following United States practices, a locomotive must have a bright headlight and ditch lights (two lights located below the headlight), a working bell, and a whistle or horn that must be sounded four times (long-long-short-long), similar to the signal for the International Morse Code letter "Q", as the train approaches the crossing. Some American cities, in the interest of noise abatement, have passed laws prohibiting the sounding of bells and whistles; however, their ability to enforce such rules is debatable. In December 2003 the US Federal Railroad Administration published regulations that would create areas where train horns could be silenced, provided that certain safety measures were put in place, such as concrete barriers preventing drivers from circumventing the gates or automatic whistles (also called Wayside horns) mounted at the crossing (which reduce noise pollution to nearby neighborhoods). Implementation of the new "Quiet Zone" Final Rule was delayed repeatedly but was finally implemented in the summer of 2005. Rail "Quiet Zone" crossings still require bells as part of the (AWDs) in addition to the wayside horns. The wayside horns usually are sets of speakers that are directed at the crossing mounted right up on a pole. These audible devices are not similar to a train horn.
Australia, New South Wales, Australia]] Australian railways generally follow United States practices, and they have increasingly been employing American-made crossing warning equipment, such as level crossing predictors, which are able to provide a consistent amount of warning time for trains of widely varying speeds. There are many different types of rail crossings in Australia; railways that run through rural areas often do not have barriers or even lights/bells to warn of incoming trains, while urban crossings will either have lights and bells or lights, bells, and boom gates. In Melbourne, there are several level crossings where electrified train tracks cross roads with electrified tram tracks. These crossings are fitted with equipment to change the voltage supplied to the overhead wiring depending on the vehicle using the crossing at that point in time. Trains are severely speed-limited across these intersections. All cases where a train line crosses a road are classified as level crossings whether or not they are signed. A tram track in its own right-of-way crossing a road can also be classified as a level crossing if it is signed with a crossbuck reading either "TRAM WAY CROSSING" or "RAIL WAY CROSSING". Otherwise, it is considered a regular intersection and usually has either traffic lights or a give way sign facing the road (see Gallery). Some recent innovations in Australia are to provide crossbucks with a pair of flashing yellow lights at about before the level crossing, called Advance Active Warning Signals (AAWS).http://nortonsafe.search.ask.com/web?q=aaws+signal&o=APN10505&prt=NIS&chn=retail&geo=AU&ver=21&locale=en_AU&tpr=111&gct=sb&qsrc=2869 This is done particularly where there are curves and other visibility problems on the road. AAWS are used where road speeds are high, and braking distances are extended, or where the level crossing is obscured by blind curves or sunlight. Another innovation is to transmit level crossing warning signals by radio into the cabin of nearby vehicles. This would be particularly useful at passive crossings, which are not yet fitted with flashing lights.
New ZealandThere are 1390 public road level crossings in New Zealand, of which 275 crossings are protected by flashing red lights, bells, and half-arm barriers; and 421 are protected by flashing red lights and bells only. The remainder are controlled by "Stop and Give Way" signs. Level crossings are the responsibility of rail infrastructure owner KiwiRail Network, the New Zealand Transport Agency, and if the crossing is on a local road, the local city or district council. On the Taieri Gorge line and the Hokitika Branch, in rural South Island, New Zealand, roads and railways share the same bridge when crossing a river, with the rail line in the road. Motorists, as well as giving way to oncoming traffic if required (the bridges have one lane) must ensure that the bridge is clear of a train, end to end, before starting to cross the bridge. For safety, trains are limited to while crossing the bridges. In many parts of New Zealand, railway lines run parallel to and close (within ) to roads. Many level crossing accidents have been caused by drivers turning right into side roads crossing the railway line concentrating on finding a suitable gap in oncoming traffic so that they fail to check the railway line or notice the activated level crossing alarms until it is too late to stop. An accident of this type occurred in August 1993 at Rolleston, near Christchurch, when a cement mixer truck turned right off State Highway 1 and collided with the side of a southbound Southerner passenger train, ripping open two carriages. The accident resulted in three deaths, including the sister of New Zealand international cricketer Chris Cairns.
Major accidentsin 1999 was attributed to a malfunction of the warning signals, with fatigue of the driver of a semi truck as a contributing factor.]] Level crossings present a significant risk of collisions between trains and road vehicles. This list is not a definitive list of the world's worst accidents and the events listed are limited to those where a separate article describes the event in question.
Unusual crossingsBishton level crossing in Wales is unusual in that it is partly replaced by an underpass for low clearance cars, leaving the level crossing for high clearance trucks. There are many similar crossings on the line between London and (built by the Great Eastern Railway Company), including at and Great Chesterford, and also near Cambridge Science Park on the former Cambridge & St. Ives Branch (this is now used only by pedestrians and cyclists). The level crossing at in Essex also has this arrangement.
Runway crossingsAircraft runways sometimes cross rail lines, and require signaling to avoid collisions.
- Kingsford Smith Airport had a runway crossing, when that runway was extended. The railway was later deviated with sharp curves to avoid that runway.
- , while not having an actual runway crossing, had extra low signals and telegraph wires at the railway station to improve safety for low flying aircraft landing or taking off.
New ZealandA level crossing near Gisborne, sees the Palmerston North - Gisborne Line cross one of Gisborne Airport's runways. Aircraft landing on sealed 1310-metre runway 14L/32R are signalled with two red flashing lights on either side of the runway and a horizontal bar of flashing red lights to indicate the runway south of the railway line is closed, and may only land on the section of the runway north of the railway line. When the full length of the runway is open, a vertical bar of green lights signal to the aircraft, with regular rail signals on either side of the runway indicating trains to stop.
- There was a runway crossing on the Belfast–Derry railway line. The runway was interlocked with conventional railway block instruments to the control tower.
- At-grade intersection
- Automatic full barriers
- Billups Neon Crossing Signal
- Boom barrier
- Four-quadrant gate
- Grade separation
- Whistle post
- Lists of rail accidents
- List of train accidents by death toll
- List of road accidents
- Winston Churchill Avenue, a street crossing an airport runway
- Web Accident Prediction System - Highway-rail crossing data from the U.S. Federal Railroad Administration, Office of Safety Analysis