IMSA level 1 certification questions with correct answers

Where are you when you install alternating flashing 12" red lights? - Answer At a railroad crossing. Who determins the the standards on traffic control devices and sets the requirements for uniformity? - Answer The Manual on uniform traffic control devices, (MUTCD). What is the the voltage that a traffic signal cabinet needs to run all its components? - Answer 120 volts AC Where are you when you come across a signal that has a ped pole on each side of the road, each having a 3 section signal on top followed with a 2 section mounted directly under neath? - Answer A ramp meter on a ramp to a highway. What is a flashing signal along the road called? - Answer A flashing beacon. What is the definition of short term work zone as per the MUTCD? - Answer 1 hour or less What's OSHA? - Answer Occupational and safety health administration