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Indicates that a signal at danger may be passed when wrong line working is in force. If the signal guards points/switches the speed limit is 40 km/h; otherwise, the limit is 100 km/h to the next station. As with other 'wrong line operation' signals, this is only used where wrong line operation is frequent.
The crossover was set to diverging with a 100 km/h (62 mph) speed limit but the LZB system displayed a 180 km/h (112 mph) limit. The driver of ICE 1652 recognized the diverging signal and managed to slow down to 170 km/h (106 mph) before the crossing and the train did not derail.
Lack of a second speed limit below signal speed indicates ACSES is not in service. Advanced Civil Speed Enforcement System (ACSES) is a positive train control cab signaling system developed by Alstom. [1] The system is designed to prevent train -to-train collisions, protect against overspeed, and protect work crews with temporary speed ...
Speed limits are enforced with a small tolerance. In urban areas, driving merely 3 km/h (2 mph) or faster above the posted or implied speed limit is considered a punishable infraction in Germany. If the speed limit is 100 km/h (62 mph) or more, the tolerance is 3%. Other tolerances may apply for mobile speed cameras and undercover police cars.
In telecommunications, [ 1 ] particularly in radio frequency engineering, signal strength refers to the transmitter power output as received by a reference antenna at a distance from the transmitting antenna. High-powered transmissions, such as those used in broadcasting, are expressed in dB - millivolts per metre (dBmV/m).
If train passes the speed trap with more than signaled speed + 15 km/h (i.e., 95 or 105 km/h), it will capture a 1000 Hz influence, which the train driver has to acknowledge (and brake to 55/70/85 km/h). Speed limit 100 to 140 km/h: The speed trap uses a 2000 Hz inductor and is located several hundreds of meters before the main signal. If a ...
An indicator, located 0.4 kilometres (1 ⁄ 4 mile) from the crossing, marks the location where the horn must be sounded when the train is travelling faster than 70 km/h (43 mph). When the train is travelling at 70 km/h or less, this signal must be sounded for twenty seconds prior to occupying the crossing.
The indicated speed must not be more than 110 percent of the true speed plus 4 km/h (2.5 mph) at specified test speeds. For example, at 80 km/h (50 mph), the indicated speed must be no more than 92 km/h (57 mph). The standards specify both the limits on accuracy and many of the details of how it should be measured during the approvals process.