Question

JEBTEBRWBL WBTNBL NBR) Adjusted Volumes (vph) [278 122) 367 333 317 339| Movement Delay (sec) 1 19.5 1 56 8.3| 37 S Movement LOS Approach Deby Approach LOS Intersection Delay Intersection LOS

Answer 1

Assume that this is a signalized intersection

So the thresholds for LOS for a signalized intersection are as follows. This table is based on HCM 2010.

Level of Service Average Control Delay (seconds/vehicle) 510 > 10 - 20 >20-35 E F >35-55 >55 - 80 >80

So movement LOS can be calculated based on this as follows.

Intersection 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.