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  2. Variations in traffic light operation - Wikipedia

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

    A common way of warning that an obscured traffic light ahead is red is a red-signal-ahead sign. It is shaped like a standard yellow diamond shape sign with LEDs spelling out "Signal Ahead". Just before the traffic light goes yellow, the word "Red" will light up above Signal Ahead and they will begin to flash alternately.

  3. Traffic warning sign - Wikipedia

    en.wikipedia.org/wiki/Traffic_warning_sign

    Vienna Convention traffic signal ahead (white triangle) These warning signs indicate that traffic lights are ahead, and are often used when it is difficult to see that a traffic light may already be showing red, to warn a driver to prepare to slow down. They may be supplemented with flashing light or lighted sign when light is red or turning red.

  4. Road signs in the United States - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    Traffic signal photo enforced. ... Traffic light ahead. CW3-3 Traffic light ahead. W3-4 ... No traffic signs. W18-1 No traffic signs.

  5. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    A speed sign is a special traffic light, variable traffic sign, or variable-message sign giving drivers a recommended speed to approach the next traffic light in its green phase [37] and avoid a stop due to reaching the intersection when lights are red. [38] [a]

  6. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    A flashing amber traffic light usually indicates you have a yield or stop sign as a redundant sign, while a turned-off traffic light usually indicates you have the right-of-way. In the UK and parts of North America, drivers simply treat the junction as being uncontrolled when traffic lights fail, giving way as appropriate, unless a police ...

  7. If a red traffic light never turns green, can you run it ...

    www.aol.com/red-traffic-light-never-turns...

    When a traffic light is malfunctioning, state laws differ on whether drivers are allowed to proceed through a red light. ... in the event a traffic signal is malfunctioning, it may be necessary to ...

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