15 - Chapter7-Intersection LOS

# 15 - Chapter7-Intersection LOS - Intersection LOS TTE 4004...

This preview shows pages 1–10. Sign up to view the full content.

Intersection LOS TTE 4004 10/28/11

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Attendance Quiz Transportation topic for extra credit project A signalized intersection with two phases has a cycle length of 60 seconds. For one traffic movement, the effective green time is found to be 34 seconds and the change interval is found to be 3 seconds. The total lost time is 4 seconds, find the displayed green time.
Level of Service (LOS) Qualitative measure of how the facility is performing Based on quantitative measurements For intersections: Based on average control delay per vehicle

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Intersection LOS This class will focus on signalized intersections only Other procedures used for other intersection types Two-way stop-controlled All-way stop-controlled Roundabouts
Introduction Analysis procedure Establish Analysis Lane Groups Calculate Analysis Flow Rates and Adjusted Saturation Flow Rates Calculate Capacities Calculate Delay Determine Level of Service (LOS)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Lane Groups Similar movements on the same approach placed into a lane group LOS at signalized intersections uses a disaggregate approach Analyzes individual approaches and individual lane groups

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Calculate Analysis Flow Rates Adjust hourly volumes for RTOR Adjust hourly volumes for PHF Assume that these are already accounted for in the textbook problems
Calculate Adjusted Saturation Flow Rates Start with a base value, usually 1900 pc/hr/ln per the Highway Capacity Manual This value is then adjusted for a variety of roadway and traffic related conditions. Factors such as lane width, grade, heavy vehicle

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/07/2011 for the course TTE 4004 taught by Professor Staff during the Fall '08 term at University of Florida.

### Page1 / 30

15 - Chapter7-Intersection LOS - Intersection LOS TTE 4004...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online