The Traffic Signal Incidents Website and the related generated Tweets depict known/reported operational issues with County of Los Angeles Department of Public Works operated traffic signals only. These are generally those traffic signals located in unincorporated County areas or within those cities that contract to the County for traffic signal maintenance services. Traffic signal conditions can change frequently. Please check this site periodically before finalizing any travel plans. For those signals maintained by Public Works, please report any traffic signal concerns to our 24-7 Dispatch Center at (626)458-4357 (HELP).