chapter 11

Question 1

Traffic Control Systems

Answer 1

–exist to provide for the safe and orderly movement of traffic; to resolveconflicts between vehicles, vessels, or aircraft; to minimize the cost oftransportation

Question 2

TrafficSignals

Answer 2

– operate by assigning the right of waysuccessively to intersection approaches

Question 3

Indications

Answer 3

– the red, yellow, or green light that is displayed to drivers in a givenmovement

Question 4

Cycle

Answer 4

– the time required for one complete sequence of signal indications

Question 5

Interval

Answer 5

– the discrete portion of a cycle during which the indications do not change

Question 6

Phase

Answer 6

– the portion of the cycle during which the movements with the right–of–way donot change

Question 7

– National Electrical Manufacturers Association

Answer 7

NEMA

Question 8

Fixed–TimeSignals

Answer 8

– employ cycles and phases of predetermined length; may be eitherelectromechanical or electronic devices