Traffic Signal is a Bollywood film directed by Madhur Bhandarkar, starring Kunal Khemu, Neetu Chandra, Ranvir Shorey and Konkona Sen Sharma in the lead. Produced by Baldev and Kavita Pushkarna, and written by Sachin Yardi, the film released on February 2, 2007. Bhandarkar won National Film Awards in 2007 as Best Director for this film, and Anil Moti Ram Palande, the first National Film Award for Best Make-up Artist.

This film is about the lives and travails of people living around a fictitious traffic signal in Mumbai.

Anybody who drives in Mumbai has experienced the 2-odd minute wait at a traffic signal. But do you know that you contribute to the economy at that signal?

The traffic signal includes a microcosm of people who derive their daily livelihoods from it. There are beggars (kids and adults), prostitutes, tricksters, eunuchs and others who sell clothes, flowers and trinkets. They speak quickly, act fast and operate somewhat honorably (with each other) to eke a meager living out of the harsh Mumbai street life. They owe allegiance and hafta (weekly "protection" fee) to the Signal Manager, Silsila (Kunal Khemu).

Traffic lights, which may also be known as stoplights, traffic lamps, traffic signals, signal lights, robots or semaphore, are signalling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic. Traffic lights were first installed in 1868 in London, and today are installed in most cities around the world. Traffic lights alternate the right of way of road users by displaying lights of a standard colour (red, yellow/amber, and green), using a universal color code (and a precise sequence to enable comprehension by those who are color blind).

In the typical sequence of coloured lights:

Usually, the red light contains some orange in its hue, and the green light contains some blue, for the benefit of people with red-green color blindness, and "green" lights in many areas are in fact blue lenses on a yellow light (which together appear green).

On December 10, 1868, the first traffic lights were installed outside the British Houses of Parliament in London, by the railway engineer J. P. Knight. They resembled railway signals of the time, with semaphore arms and red and green gas lamps for night use. The gas lantern was turned with a lever at its base so that the appropriate light faced traffic. It exploded on 2 January 1869, injuring or killing the policeman who was operating it.