The correct answer is: A. Stop or red time of a signal is the sum of go and clearance intervals for the cross flow.
A stop or red time is the amount of time that a signal is red for a particular direction of traffic. A go or green time is the amount of time that a signal is green for a particular direction of traffic. A clearance time is the amount of time that a signal is yellow for a particular direction of traffic. The cycle length is the total amount of time that a signal is red, green, and yellow for all directions of traffic.
The stop or red time of a signal is not the sum of the go and clearance intervals for the cross flow. The stop or red time is the amount of time that a signal is red for a particular direction of traffic, while the go and clearance intervals are the amounts of time that a signal is green and yellow for the cross flow.
The go or green time of a signal is not the sum of the stop and clearance intervals for the cross flow. The go or green time is the amount of time that a signal is green for a particular direction of traffic, while the stop and clearance intervals are the amounts of time that a signal is red and yellow for the cross flow.
The clearance time is generally 3 to 5 seconds. This is the amount of time that a signal is yellow for a particular direction of traffic, and it is used to allow vehicles to clear the intersection before the signal turns red.
The cycle length is normally 40 to 60 seconds for two phase signals. This is the total amount of time that a signal is red, green, and yellow for all directions of traffic. The cycle length is determined by the volume of traffic on all of the approaches to the intersection.