Traffic on roads consists of pedestrians, animals, and various vehicles that may travel together or singly using the public way. Traffic is classified by type, including heavy motor vehicles, other vehicles like mopeds and bicycles, and pedestrians. Green lights allow traffic to proceed in the indicated direction, yellow lights prepare traffic to stop before the intersection, and red lights prohibit all traffic from proceeding. Safety tips include wearing helmets on two-wheelers, maintaining adequate distance from the vehicle ahead, yielding to pedestrians at crossings, stopping behind stop lines at signals, and avoiding zigzag driving.