All the signals along a street display the same indication at the same time in which of the following systems of traffic control?

The signal intervals at each intersection along a street may be independently adjusted to the traffic requirement in which system of traffic control?

The total lost time on a traffic signal is noted to be 6 seconds, the actual green time is 32 seconds and the amber time is 3 seconds. How much is the effective green time?

An isolated intersection is controlled by a three-phase signal system. The critical flow ratios for the three phases are 0.25, 0.3 and 0.15 respectively. The time lost per phase is 4 seconds. The optimum cycle length (seconds) by Webster's method is ______.

With fixed cycle length, the number of vehicles arriving on an approach during all cycles is __________.

Normal flows on two approach roads at an intersection were observed as 622 and 485 PCU/Hr and the saturation flow was 1890 PCU/Hr on each road. The total lost time per phase = 16 seconds. What would br the optimum cycle time as per Webster's formula?

The vehicles departing from a queue with an average headway of 2.3 seconds have a saturation flow rate of __________ vehicles per hour per lane.

The IRC recommended value of initial walking time of pedestrians is _______ seconds.

As per IRC:93, the reaction time of vehicle drivers to start up from the stop position for the first vehicle is ______ seconds.

As per IRC:93, the reaction time of drivers to start up from the stop position after the first vehicle is _____ seconds.