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  2. 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.

  3. 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.

  4. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Traffic lights normally consist of three signals, transmitting meaningful information to road users through colours and symbols, including arrows and bicycles. The regular traffic light colours are red, yellow (also known as amber), and green arranged vertically or horizontally in that order.

  5. Road signs in the United States - Wikipedia

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

    Signs including Stop, Yield, No Turns, No Trucks, No Parking, No Stopping, Minimum Speed, Right Turn Only, Do Not Enter, Weight Limit, and Speed Limit are considered regulatory signs. Some have special shapes, such as the octagon for the Stop sign and the crossbuck for railroad crossings.

  6. 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 ...

  7. Vienna Convention on Road Signs and Signals - Wikipedia

    en.wikipedia.org/wiki/Vienna_Convention_on_Road...

    The title page of the Vienna Convention on Road Signs and Signals. The Convention on Road Signs and Signals, commonly known as the Vienna Convention on Road Signs and Signals, is a multilateral treaty to standardize the signing system for road traffic (road signs, traffic lights and road markings) in use internationally.

  8. Glossary of road transport terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_road_transport...

    A type of traffic sign that confirms the identity of the route being traveled on. Red light camera A type of traffic enforcement camera that captures an image of a vehicle which has entered an intersection in spite of the traffic signal indicating red. Rest area, travel plaza, rest stop, or service area

  9. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    Rules for traffic lights. Traffic lights – devices positioned at road intersections, pedestrian crossings and other locations – control flows of traffic with social norms and laws created by the state. [1] Traffic signals have to convey messages to drivers in a short period of time about constantly-changing road rules.

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