Question

6. Fill the table below 5 pts EBT EBR WBL WBT NBINBR Adjusted Volumes (vph) 278 122 367 333 317 339 Movement Delay (sec) | 19. 5 56 8.3) 375 Movement LOS Approach Delay Approach LOS Intersection Delay Intersection LOS

Answer 1

We are given the different turning movements. Clearly it is a T junction with flow arrows like below

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Assume it is a signalized junction, then we know the delay thresholds for different LOS as follows

8 Signalized Intersections Average Control Delay (secs/veh) <= 10 >10-20 >20- 35 >35 - 55 >55 - 80 > 80 Uow

So calculate movement LOS and approach LOS for each approach as follows, and then look up the LOS table above and write the LOS.

Approach delay = ((Volume in an movement) * (Delay of that movement))/ Sum of volumes on all movements. So we can calculate it as follows

.

EBT 278 EBR 122 WBL 367 56 WBTT NBL 333 317 8.3 37 NBR 339 5 Adjusted Volumes (vph) Movement delay (sec) Movement LOS Approach Delay Approach LOS 19.5 B 19.5 A 33.308 20.463

Intersection delay = ((Volume in an approach) * (Delay of that approach))/ Sum of volumes on all approaches.

EBT EBR 122 NBR 339 278 NBL 317 37 19.5 WBL WBT 367 333 8.3 Α 33.308 56 5 Adjusted Volumes (vph) Movement delay (sec) Movement LOS Approach Delay Approach LOS Intersection Delay Intersection LOS Α. 19.5 20.463 25.364