Abstract
The present paper concerns with the detail and the experimental result of a road traffic simulator constructed to obtain the quantitative relation between the traffic flow and its regulating elements such as intersection and signal on a highway or a city road. In the simulator the number of cars passing on roads is represented by electrical pulses in the circuit, and a number of stored pulses and a delay time of pulses are interpreted as corresponding to a waiting queue and time at a intersection.
In the measurement the pulse distance, the phase split and the signal off-set time are taken to be the variable parameters. The set of parameters which gives the maximum number of pulses passing through the circuit in a unit time is analysed in terms of the actual traffic flow. For convenience the pulse width is kept constant and the pulses are placed periodically. The waiting queue and time are measured by a cathode ray oscilloscope.
As an example the optimal off-set time for the minimum waiting queue was measured for the both directions of two intersections. The result shows that the optimal off-set time is sensitive to the ratio of the traffic flows in the both directions. The case of three intersections was also considered.
The discussion was made for the relation of a off-set time and a phase split to a waiting queue and a traffic volume.
