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  2. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Yellow lights can also have countdown lights, but most lights do not. Usually the countdown light has 2 digits, in case the time of the main light (usually the red light, rarely the green light) is longer than 100 seconds, depending on the type of light, the following possibilities may occur:

  3. Road signs in the United States - Wikipedia

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

    11th edition of the MUTCD, published December 2023. In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices (MUTCD) and its companion volume the Standard Highway Signs (SHS).

  4. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    In some jurisdictions (such as New York City), [citation needed] there are ordinances or by-laws against "gridlocking".A motorist entering an intersection (even if on a green light) but unable to proceed and who gets stranded in the intersection (when traffic ahead fails to proceed), and who remains after the light turns red (thus blocking traffic from other directions) may be cited.

  5. History of traffic lights - Wikipedia

    en.wikipedia.org/wiki/History_of_traffic_lights

    The signal was 22 feet (6.7 m) high. The light was called the semaphore and had arms that would extend horizontally that commanded drivers to "Stop" and then the arms would lower to a 45 degrees angle to tell drivers to proceed with "Caution". At night a red light would command "Stop" and a green light would mean use "Caution". [3]

  6. Variations in traffic light operation - Wikipedia

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

    In New Zealand, where they drive 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 the 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).

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  8. What is a Hilltopper? Explaining Western Kentucky's ... - AOL

    www.aol.com/hilltopper-explaining-western...

    Here's the history of why Western Kentucky is called the Hilltoppers and why its mascot is called Big Red: What is a Hilltopper? You guessed it — it has to do with a hill.

  9. Turn on red - Wikipedia

    en.wikipedia.org/wiki/Turn_on_red

    Another version is commonly known as a left turn on red (left on red) in countries that drive on the right side of the road, and would be a right turn on red in countries that drive on the left side of the road, if any allowed it. These turns are typically restricted to turns onto a one-way.