https://www.trafficsolution.cn/item/pedestrian-crossing-signal-controller Fixed time mode: vehicle flow in peak time. Pedestrian requirements mode: vehicle flow in off peak daytime). Yellow flashing mode: vehicle flow in off-peak time (middle night period). Switch off mode: vehicle flow in off-peak time (earlier morning period). Sinowatcher introduced a new LED smart traffic signals and modules. Our new LED lights are the latest innovations in technology that improve brightness, clear visibility, energy-saving efficiency, and lower maintenance cost than traditional traffic lights.