TPWS Train Protecting & Warning System，接近红灯太快或者闯红灯会紧急制动，红灯前面会放两个TPWS设备，经过第一个开始计时，经过第二个计时结束，如果平均速度太快会紧急制动

2021年7月2日 · 如需了解脉冲宽度违例的详情，请参阅“时序汇总报告 (Report Timing Summary)”的“TPWS”部分。 最严重的脉冲宽度违例在报告中显示为最差脉冲宽度时序裕量 (WPWS)。

TPWS is not designed to prevent signals passed at danger (SPADs) but to mitigate the consequences of a SPAD, by preventing a train that has had a SPAD from reaching a conflict point after the signal. A standard installation consists of an on-track transmitter adjacent to a signal, activated when the signal is at danger.

在行驶前，驾驶员需按下TPWS面板上的“Trainstop Override”按钮，这样列车就可以通过信号而不会触发TPWS制动。 然后，驾驶员必须以能够在目视距离内停下来的速度行驶，即使该区间看起来没有任何问题，他们仍然要保持谨慎。

而在英国，为了补回AWS的短板，也开发了新的TPWS（Train Protection and Warning System，列车保护及警示系统），以避免列车超速通过限制信号（注意，TPWS并不能完全避免列车闯红灯，但可以减少闯红灯带来的影响，因为可以对列车的速度，通过紧急制动作出限制，尽量 ...

TPWSfour control units are designed to fit in the same space envelope as the existing TPWS system – reducing the headache of finding additional space for system components. ETCS compatibility is built into TPWSfour to ensure future developments and upgrades can be accommodated without further system developments or performance impacts.

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Portable AWS magnets are provided to give a warning to the driver, on the approach to temporary and emergency speed restrictions. The following equipment is provided on each fitted traction unit. The AWS receiver is located under a traction unit and detects the sequences and polarities of magnetic fields from the AWS track magnets.

tpws的目的是在安裝tpws軌道設備的情況下，如果列車滿足以下條件，則通過自動施加制動來停止列車： 未經授權通過危險信號（冒進信號） 高速接近危險信號

At a minimum, duty holders must use the Train Protection and Warning System (TPWS) which is capable of intervening and applying the train brakes. Where it is reasonably practicable to install...