improved proximity indicators and turn indicators for hazardous operating conditions . such indicators provide increased visibility and safety to observers and operators of vehicles . such lights may be comprised of separate devices or may be comprised of flashing or strobing brake , accelerator , and / or turn indicators positioned at the front , sides , top , and rear of a vehicle . the intensity and flashing pattern of such indicators vary according to the operating settings of a vehicle , the proximity of obstacles including other vehicles , the desire of the operator , and according to the prevailing operating or weather conditions .