What is Traffic light?
{{Use dmy dates|date=November 2024}} [[File:Traffic lights 3 states.svg|right|thumb|This diagram shows how a traditional traffic light works.<br />'''Picture 1:''' A [[red]] light means stop.<br />'''Picture 2:''' A [[green]] light means go. <br />'''Picture 3:''' A [[yellow]] light means slow down and be ready to stop.]] '''Traffic lights''' (or '''traffic signals''' or '''stoplights''') are [[Electric light|lights]] used to control the movement of [[traffic]]. They are placed at [[road]] [[intersection]]s and [[Pedestrian crossing|crossings]].<ref>{{Cite web|title=Frequently Asked Questions - Traffic Signals|url=https://www.fdot.gov/traffic/faqs/TrafSignalFAQ|access-date=13 April 2021|website=FDOT|language=en}}</ref> The different [[colour]]s of lights tell [[driver]]s what to do. In [[South Africa]], they call them '''robots'''.<ref>{{cite web|title=robot – definition of robot in English – Oxford Dictionaries|url=https://en.oxforddictionaries.com/definition/robot|url-status=dead|archive-url=https://web.archive.org/web/20180814235213/https://en.oxforddictionaries.com/definition/robot|archive-date=14 August 2018|website=Oxford Dictionaries – English}}</ref><ref>{{cite web|title=see robot – definition of robot in Dictionary of South African English.|url=https://dsae.co.za/entry/robot/e06032|website=Editor's Note: The origin of 'robot' used as 'traffic light' is from the English translation of the play [[R.U.R.]] by [[Karel Čapek]] which debuted in England in 1923 which introduced the term 'robot' to an English audience. For a short time in England it was fashionable to use 'robot' for 'traffic light' from the late 1920s, when traffic lights were being installed in England. This usage travelled to South Africa in the early 1930s, when they had their first traffic lights installed, and where it continues to be used almost 90 years later, while 'robot' for 'traffic light' fell out of usage in England. See Foster, B. 1970. The changing English language. Harmondsworth, Middlesex: Penguin.}}</ref> In [[Japan]], the