Traffic signals are not the right solution for every traffic problem. For example, although traffic signals can reduce the number of broadside collisions at an intersection, they can also increase the ...

Toronto’s Signal Optimization Program is a coordinated effort designed to make the most efficient use of Toronto’s 2,487 traffic signals (as of May 26, 2023) by improving traffic signal operations.

This repository contains the source code and plotting notebooks used to generate all examples presented in the Optimal Driving Under Traffic Signal Uncertainty by Mallory E. Gaspard and Alexander ...

There are roughly 320,000 traffic signals in the U.S. and the annual congestion costs -- direct and indirect -- associated with those intersections comes out to $22.9 billion.

Traffic lights might see a fourth signal as self-driving cars become more practical. Getty Images/iStockphoto. The researcher’s latest plans differ from a 2020 model of a four-light intersection.