A Model to Calculate Delay Savings for Highway Improvement Projects

Memmott, Jeffery L.; Buffington, Jesse L.

i

A Model to Calculate Delay Savings for Highway Improvement Projects

1983-10-01
By Memmott, Jeffery L. ; Buffington, Jesse L.

File Language:

English

Details

Creators:

Memmott, Jeffery L. ; Buffington, Jesse L.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas State Department of Highways and Public Transportation
Subject/TRT Terms:

Computer Programs Construction Projects Dimensionless Parameters Improvements Ranking (Statistics) Speed Volume Relationships
Publication/ Report Number:

FHWA/TX-84/25+327-1
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Interim: September 1982 - September 1983
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

This report presents a computerized delay savings model which can be used to calculate the delay savings resulting from an improvement of an existing highway facility. The delay savings come as a result of the increased average speed along the improved facility, which is converted into dollars of delay savings, calculated for each year through a 20-year planning horizon, and discounted to the present. The model also calculates a delay savings ratio, which is the ratio of the total discounted delay savings and the estimated construction cost. The ratio measures the amount of delay savings per dollar construction cost. These delay savings ratios are then ranked, with the highest being first and the others following in order. The cumulative construction cost is also shown so that if a specific budget amount is available, the projects with the highest delay savings ratios within that budget can be identified. The model incorporates recent data concerning the relationship between average speeds and hourly traffic volumes for several facility types. The model provides a quick and simple method to compute delay savings and compare projects on that basis.
Format:

PDF
Funding:

2-8-82-327
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:d57de7a601874d976983f922a6c6fc0b770770a030141836c8e14478291bea839caeee7aae70b122ddb0534ea10a582ec7c9d18f4788c66994a4692aba15e489
Download URL:

https://rosap.ntl.bts.gov/view/dot/85836/dot_85836_DS1.pdf
File Type:

[PDF - 3.06 MB ]

File Language:

English

ON THIS PAGE

Details

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.