Turner-Fairbank Highway Research Center

 
 
 
 
« back to the list

Spatially Disaggregate Panel Models of Crash and Injury Counts: The Effect of Speed Limits and Desig

Product Type

Research Report

Author

Kweon, Y.J. and K.M. Kockelman

Date

Jan-03

Abstract

Relationships between speed choice and crash occurrence have been difficult to identify. This work examines vehicle speeds (and their variations) derived from single loop detectors for several Southern California freeways, within and across freeway lanes, together with corresponding crash data. While a variety of factors clearly influence speed and speed variance, there is no evidence in these crash data sets, and observations of their corresponding series of 30-second traffic conditions, that speeds or their variation trigger crashes.

Link To Research Report

Spatially Disaggregate Panel Models of Crash and Injury Counts: The Effect of Speed Limits and Desig

Keywords

speed models
speed variation
freeway crash conditions


« Back to the List

HSIS Summaries

HSIS Summary Reports are two to eight pages in length and include a brief description of the issue addressed, data used, methodology applied, significant results, and practical implications.

Read More

Research Reports

A variety of research studies have been performed using data from HSIS. Many of the final reports prepared are now available electronically.

Read More

Technical Summaries

Research reports are often summarized in executive summaries, technical briefs, or other abbreviated formats. Included here are those road safety summaries that involved research using HSIS data.

Read More

Safety Analysis Tools

In addition to conducting research, HSIS resources are also used to develop products that can be used by practitioners in the analysis of safety problems.

Read More

Other Projects

HSIS data are sometimes used in research studies that result in other types of finished products, such as dissertations, theses, and conference proceedings.

Read More