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  2. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Traffic lights control flows of traffic using social norms and legal rules. In most jurisdictions, it is against the law to disobey traffic signals and the police, or devices such as red light cameras, can issue fines or other penalties – and in some cases prosecute – drivers who break those laws. [ 71 ]

  3. History of traffic lights - Wikipedia

    en.wikipedia.org/wiki/History_of_traffic_lights

    The history of traffic lights is associated with the historic growth of the automobile. [1] Traffic lights were first introduced in December 1868 on Parliament Square in London to reduce the need for police officers to control traffic. [2] Since then, electricity and computerised control has advanced traffic light technology and increased ...

  4. Charles Adler Jr. - Wikipedia

    en.wikipedia.org/wiki/Charles_Adler_Jr.

    Known for. Transportation Safety. Charles Adler Jr. (June 20, 1899 – October 23, 1980) was an American inventor and engineer. He is most known for developing devices meant to improve transportation safety, including sonically actuated traffic lights, colorblind road signals, pedestrian push-buttons, and flashing aircraft lights.

  5. Variations in traffic light operation - Wikipedia

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

    The small light at the top tells the driver when the vehicle's transponder signal is received by the traffic light. In traffic engineering, there are regional and national variations in traffic light operation. This may be in the standard traffic light sequence (such as the inclusion of a red-amber phase) or by the use of special signals (such ...

  6. Traffic light control and coordination - Wikipedia

    en.wikipedia.org/wiki/Traffic_light_control_and...

    Traffic light control and coordination. A junction for road vehicles and pedestrians controlled by traffic lights in the UK. The various vehicle and pedestrian movements are separated in either time or space for safety and efficiency. The normal function of traffic lights requires more than sight control and coordination to ensure that traffic ...

  7. Stop sign - Wikipedia

    en.wikipedia.org/wiki/Stop_sign

    A stop sign is a traffic sign designed to notify drivers that they must come to a complete stop and make sure the intersection (or railroad crossing) is safely clear of vehicles and pedestrians before continuing past the sign. [1] In many countries, the sign is a red octagon with the word STOP, in either English, the national language of that ...

  8. Road traffic safety - Wikipedia

    en.wikipedia.org/wiki/Road_traffic_safety

    Road traffic safety. Vehicles experiencing a breakdown or an emergency can stop in the emergency lane; these lanes may themselves present risks to traffic. Road traffic safety refers to the methods and measures used to prevent road users from being killed or seriously injured. Typical road users include pedestrians, cyclists, motorists, vehicle ...

  9. Traffic sign - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign

    Traffic sign. A "route confirmation" sign on the Warrego Highway in Queensland, Australia, informing motorists of their distance (in kilometres) from the places listed. Fingerposts and other road signage in the English village of Sturminster Marshall, near Poole. Traffic signs or road signs are signs erected at the side of or above roads to ...