The blue lights on top of traffic signals, also known as confirmation lights, are designed to assist law enforcement detect ...

Glendale is investing in road safety, adding flashing yellow signals and new radar tech in police cars to reduce crashes.

Red light penetrates best. By the 1860s traffic conditions in London prompted officials to seek a way of controlling horse-drawn carriages with a signal system and opted for the railroad scheme of ...

If traffic signals could use data about vehicles' location and trajectory to either extend green lights by brief moments when cars are in the dilemma zone, or change to yellow early when no cars ...

How it works. Emergency Vehicle Preemption, or EVP, sensors attached to traffic signals detect when an emergency vehicle is approaching and switch the light to green, while setting crossing ...

The concept of the traffic light actually dates all the way back to the 1860s, where gas-lit signals were placed on the posh streets that lined the Houses of Parliament in London.

Traffic lights were invented in 1868 by a British engineer named J.P. Knight. What was originally a gas-lit traffic signal, has now become powered using electricity and light bulbs. However, that ...

On many traffic signals found throughout the United States, there is a small light that is placed in between or off to the side of the traffic signal lights. You may not know it, but they play a ...

Potts – the father of the yellow traffic signal – retired in 1954 and passed away in 1956. It is perhaps a good thing that Mr. Traffic Light is not currently around to see how poorly modern ...

PENNSYLVANIA (WHTM) — On many traffic signals found throughout the United States and Pennsylvania, there is a small light that is placed in between or off to the side of the traffic signal lights.