A hazard turn light system for indicating an emergency turn for vehicles, said vehicles having: stop lights (10a, 10b), conventional turn signal lights (12a, 12b), a conventional turn signal control and a conventional hazard flasher system operable to override the conventional turn signal control, and cause at least the conventional turn signal lights (12a, 12b) on both sides of the vehicle to flash on and off, the system characterised by; a source of power configured to be accessed independently of said conventional hazard flasher system, an emergency turn signal switch module accessible to the driver, configured to be operable by the driver independently of the conventional hazard flasher system and the conventional turn signal control, while the driver is still driving the vehicle, wherein the emergency turn signal switch module is connected to said source of power; an emergency turn light signal flasher unit connected to said emergency turn signal switch module which sends flashing signals when the emergency turn signal switch module is activated by the driver; right and left rear emergency turn light modules (34, 36), mountable on respective right and left sides of the vehicle and which may be selectively activated by the emergency turn signal switch module; wherein said emergency turn signal switch module comprises an emergency turn light signal switch control (22, 24) which is selectively operable to selectively activate the one or the other of said emergency turn light modules (34, 36); right and left wiring (30, 32) connected to the emergency turn signal switch module and connected to respective right and left emergency turn light modules (34, 36) to send an emergency turn signal from the emergency turn signal switch module to a selected one of said emergency turn light modules (34, 36), right and left indicator lights (38, 40), mountable in the driving compartment and connected to said emergency turn signal switch module, which are selectively operated when the driver has selectively operated the emergency turn light signal switch control, to indicate to the driver the operation of the selected one or other of the emergency turn light modules (34, 36). stop lights (10a, 10b), conventional turn signal lights (12a, 12b), a conventional turn signal control and a conventional hazard flasher system operable to override the conventional turn signal control, and cause at least the conventional turn signal lights (12a, 12b) on both sides of the vehicle to flash on and off, the system characterised by; a source of power configured to be accessed independently of said conventional hazard flasher system, an emergency turn signal switch module accessible to the driver, configured to be operable by the driver independently of the conventional hazard flasher system and the conventional turn signal control, while the driver is still driving the vehicle, wherein the emergency turn signal switch module is connected to said source of power; an emergency turn light signal flasher unit connected to said emergency turn signal switch module which sends flashing signals when the emergency turn signal switch module is activated by the driver; right and left rear emergency turn light modules (34, 36), mountable on respective right and left sides of the vehicle and which may be selectively activated by the emergency turn signal switch module; wherein said emergency turn signal switch module comprises an emergency turn light signal switch control (22, 24) which is selectively operable to selectively activate the one or the other of said emergency turn light modules (34, 36); right and left wiring (30, 32) connected to the emergency turn signal switch module and connected to respective right and left emergency turn light modules (34, 36) to send an emergency turn signal from the emergency turn signal switch module to a selected one of said emergency turn light modules (34, 36), right and left indicator lights (38, 40), mountable in the driving compartment and connected to said emergency turn signal switch module, which are selectively operated when the driver has selectively operated the emergency turn light signal switch control, to indicate to the driver the operation of the selected one or other of the emergency turn light modules (34, 36).