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  2. Electronic stability control - Wikipedia

    en.wikipedia.org/wiki/Electronic_stability_control

    ESC control light. Electronic stability control (ESC), also referred to as electronic stability program (ESP) or dynamic stability control (DSC), is a computerized technology [1] [2] that improves a vehicle's stability by detecting and reducing loss of traction (). [3]

  3. Track lighting - Wikipedia

    en.wikipedia.org/wiki/Track_lighting

    Track lighting is a method of lighting where light fixtures are attached anywhere on a continuous track device which contains electrical conductors. [ 1 ] [ 2 ] This is in contrast to directly routing electrical wiring to individual light positions.

  4. North American railroad signals - Wikipedia

    en.wikipedia.org/wiki/North_American_railroad...

    There are two main types of signaling aspect systems found in North America, speed signaling and weak route signaling. [citation needed] Speed signaling transmits information regarding how fast the train is permitted to be going in the upcoming segment of track; weak route signaling transmits information related to the route a train will be taking through a junction, and it is incumbent upon ...

  5. Traction control system - Wikipedia

    en.wikipedia.org/wiki/Traction_control_system

    The predecessor of modern electronic traction control systems can be found in high-torque, high-power rear-wheel-drive cars as a limited slip differential.A limited-slip differential is a purely mechanical system that transfers a relatively small amount of power to the non-slipping wheel, while still allowing some wheel spin to occur.

  6. Variations in traffic light operation - Wikipedia

    en.wikipedia.org/wiki/Variations_in_traffic...

    In New Zealand, where traffic is on the left, when a road is given a green light from an all-direction stop, a red arrow can continue to display to turning traffic, holding traffic back while a pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic goes straight ahead and there is no permissive right turn allowed (for right turns).

  7. Track circuit - Wikipedia

    en.wikipedia.org/wiki/Track_circuit

    The track circuit can be split with extra blockjoints and the detectors in the points complete the track circuit when the points are normal and the signal is entitled to receive a green light. This is partially fail-safe. A second relay can be installed on the turnout, with its contacts wired in series with the main relay.

  8. Tell-tale (automotive) - Wikipedia

    en.wikipedia.org/wiki/Tell-tale_(automotive)

    A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.

  9. Photoresistor - Wikipedia

    en.wikipedia.org/wiki/Photoresistor

    Ambient light falling on the photoresistor causes the streetlight to turn off. Thus energy is saved by ensuring the light is only on during hours of darkness. Photoresistors are also used in laser-based security systems to detect the change in the light intensity when a person or object passes through the laser beam.