A signal is required to be installed at a North-South and East-West intersection. The following data is available:
|
Parameter |
North |
South |
East |
West |
|
Design how flow (PCU/hr) |
1500 |
900 |
1000 |
750 |
|
Saturation flow (PCU/hr) |
3000 |
3000 |
2500 |
2500 |
Calculate the cycle length as per Webster’s approach (in seconds) for two-phase fixed type signal if only straight-ahead traffic is permitted. (Assume total time lost per cycle is 15 seconds)
Enter numerical value using the virtual keypad. Round off where necessary.