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The Vienna Convention on Road Signs and Signals required ratification by how many states to take effect?
Answer
15
On what date did the Vienna Convention on Road Signs and Signals enter into force?
Answer
6 June 1978
On a puffin crossing, pedestrian signal lights are mounted on which side of the road?
Answer
Near side
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Latest trivia questions
Lester Wire developed the first electric traffic light in 1912 in which U.S. city?
Answer
Salt Lake City
Who invented the 1868 London traffic signal outside the Houses of Parliament?
Answer
John Peake Knight
The first traffic signals showing red and green lights were installed outside which London building?
Answer
Houses of Parliament
What does the U.S. abbreviation MUTCD stand for?
Answer
Manual on Uniform Traffic Control Devices
What is the common name of the marker used for United States Numbered Highways?
Answer
U.S. Route shield