Assignment: Intersections

Submission Requirements:

Show all calculations clearly, including each step.

Submit your assignment as a PDF due on October $24$th$.$

Scenario:

We have a four$-$leg intersection with pre$-$timed signals in a Metro area $($CBD$)$ that has a population of more than $250,000.$ Each leg has one lane per direction and the following:

Critical Lane Volume $=465ve\frac{h}{h}r$

Lane Width: $12$ ft

$3\mathrm{.}5\%$ Heavy Vehicles

Terrain grade: $-0\mathrm{.}2\%$

No Parking on any intersection approach

No bus stops at intersection

Study Area is a Central Business District

The adjustment factor for lane utilization is $1$

No pedestrians or bicycles are present

No construction at the moment of the study

Coordinated Operation on a two$-$way street where the subject direction does not receives good progression

Green time $=45s$

Cycle Length $=120s$

Yellow Time $=3s$

Lost time $=4s$

All Red time $=1s$

No initial queue is present at the start of the analysis period

Incremental delay is $0\mathrm{.}68$ sec

Find LOS for this intersection.