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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. Road signs in the United States - Wikipedia

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

    Some signs can be localized, such as No Parking, and some are found only in state and local jurisdictions, as they are based on state or local laws, such as New York City's "Don't Block the Box" signs. These signs are in the R series of signs in the MUTCD and typically in the R series in most state supplements or state MUTCDs.

  4. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 February 2025. Signaling device to control competing flows of traffic This article is about lights used for signalling. For other uses, see Traffic light (disambiguation). "Stoplight" redirects here. For other uses, see Stoplight (disambiguation). An LED 50- watt traffic light in Portsmouth, United ...

  5. Should you signal to make a right or left turn when trying to ...

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  6. Traffic sign - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign

    Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones . Later, signs with directional arms were introduced, for example the fingerposts in the United Kingdom and their wooden counterparts in Saxony .

  7. Comparison of traffic signs in English-speaking territories

    en.wikipedia.org/wiki/Comparison_of_traffic...

    The Latin American-style do not proceed straight sign may take a different meaning in countries with standard No Entry signs. Typically, it indicates an intersection where traffic cannot continue straight ahead, but where cross-traffic may enter the street from the right (or left). Thus, it is distinguished from a No Entry (for all vehicles) sign.

  8. Comparison of MUTCD-influenced traffic signs - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_MUTCD...

    The Latin American-style 'do not proceed straight' sign may take a different meaning in countries with standard No Entry / Do Not Enter signs. Typically, it indicates an intersection where traffic cannot continue straight ahead (often involving a one-way street to be exact), but where cross-traffic may enter the street from the right (or left).

  9. Traffic-sign recognition - Wikipedia

    en.wikipedia.org/wiki/Traffic-sign_recognition

    Traffic-sign (speed limit) recognition. Traffic-sign recognition (TSR) is a technology by which a vehicle is able to recognize the traffic signs put on the road e.g. "speed limit" or "children" or "turn ahead". This is part of the features collectively called ADAS. The technology is being developed by a variety of automotive suppliers to ...