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In its basic form, a forward collision warning system monitors a vehicle's speed, the speed of the vehicle in front of it, and the distance between the vehicles, so that it can provide a warning to the driver if the vehicles get too close, potentially helping to avoid a crash. [3]
Valhalla train crash, 2015 accident in similar setting in New York where SUV on tracks was struck by rush-hour commuter train, killing six including SUV driver; crossing barrier struck vehicle, driver was apparently unaware she was in train's path, and questions were raised about traffic signal timing on adjacent major highway.
Traffic signal preemption (also called traffic signal prioritisation) is a system that allows an operator to override the normal operation of traffic lights.The most common use of these systems manipulates traffic signals in the path of an emergency vehicle, halting conflicting traffic and allowing the emergency vehicle right-of-way, thereby reducing response times and enhancing traffic safety.
Traffic signal timing is a very complex topic. For example timing a 'WALK' signal for a wide pedestrian crossing and slower pedestrians (for example the elderly) could result in very long waits for vehicles, and thus increases the likelihood of cars running the light, which could potentially cause accidents. Therefore, optimizing the safety of ...
Sidewalks, curbs and traffic signals in Hagerstown, Maryland, United States Speed limits in different areas; here unusually with only a "recommended" limit (Richtgeschwindigkeit) of 130 km/h on the Autobahn in Germany DRIP [Note 1] variable message sign guiding traffic on the Dutch A13 motorway Vehicles experiencing a breakdown or an emergency can stop in the emergency lane; these lanes may ...
Typical traffic engineering projects involve designing traffic control device installations and modifications, including traffic signals, signs, and pavement markings. However, traffic engineers also consider traffic safety by investigating locations with high crash rates and developing countermeasures to reduce crashes.
In the US 49/563.5 regulatory framework, Event data recorder is defined as a . a device or function in a vehicle that records the vehicle's dynamic time-series data during the time period just prior to a crash event (e.g., vehicle speed vs. time) or during a crash event (e.g., delta-V vs. time), intended for retrieval after the crash event.
[citation needed] Now, when a signal is red (or double red) only because of grade timing, the (top) red light begins flashing once a train has passed the preceding signal that displayed the lunar white light. The trip arm remains up during this phase, but the flashing red confirms to the driver that there was a lunar white on entry to the ...