Documents of type: Research

Extent and Impacts of the VA-DOT Exception Process for Access Management Design Standards

up
Click here if you liked this information

The Virginia Department of Transportation (VDOT) has released a report that addresses Virginia’s standards and exemption processes for commercial entrance spacing. This report also observes the extent to which commercial access exceptions are used in Virginia, and the impact on crashes at these sites. The previous VDOT Road Design Manual details requirements that new commercial entrances meet certain minimum spacing standards, though landowners may request exemptions. 
 

An Expanded Functional Classification System for Highways and Streets

up
Click here if you liked this information

TRB's National Cooperative Highway Research Program (NCHRP) has released a pre-publication, non-edited version of Research Report 855: An Expanded Functional Classification System for Highways and Streets. This report builds upon preliminary engineering of a design project, including developing the purpose and need. In particular, it provides additional contexts beyond urban and rural, facilitates accommodation of modes other than personal vehicles and adds overlays for transit and freight.

Influence of Road Cross Section on Access Spacing

up
Click here if you liked this information

This report presents a study on the influences of select cross-sectional-related design elements (specifically median configurations and bicycle 
lanes) and their impact on crash severity and type, as well as the associated driver gap acceptance for turning maneuvers at midblock driveway 
locations on urban arterials. The primary goal of this proposed research is to better understand how the median and bicycle lane configurations 
can influence safety and operations at driveway locations.

The Relationship Between Access Density and Accident Rates: Comparisons of NCHRP Report 420 and Minnesota Data

up
Click here if you liked this information

This digest summarizes findings of National Cooperative Highway Research Program (NCHRP) Project 3-52A, "Impacts of Access-Management Techniques." NCHRP Report 420, "Impacts of Access Management Techniques" (1999), presents relationships between access density and accident rates. This digest uses additional data from Minnesota to confirm these relationships. The digest is organized as follows: Introduction; Problem Statement; Objective and Approach; Background; Results; Comparisons; and Accident Rate Indices. 

Regional Implementation of Access Management

up
Click here if you liked this information

The Maricopa Association of Governments (MAG) conducted a survey of Metropolitan Planning Organizations (MPOs) to assess the implementation of access management at the regional level. The intent of the survey was to determine if access management was being implemented at the regional level; what had been implemented; and how implementation was achieved. Survey responses were divided into three categories: all respondents, respondents serving a population of one million or more (population subset), and respondents serving 25 or more member agencies (agency subset).

Development of the Des Moines Access Management Plan

up
Click here if you liked this information

Plazak, D., A. Garms, and J. Rees, Development of the Des Moines Access Management Plan, prepared for the Iowa Department of Transportation, Iowa State University (2004);   [Plazak, D., A. Garms, and J. Rees, “Access Management Plan and Program for Des Moines, Iowa, Metropolitan Area,” Transportation Research Record: Journal of the Transportation Research Board, No 1981, Transportation Research Board of the National Academies, Washington, D.C. (2006); Plazak, D., A. Garms, and J.

Update of Florida Crash Reduction Factors and Countermeasures to Improve the Development of District Safety Improvement Projects

up
Click here if you liked this information

Gans, A., J. Shen, and A. Rodriguez, Update of Florida Crash Reduction Factors and Countermeasures to Improve the Development of District Safety Improvement Projects, prepared for the Florida Department of Transportation, (April 2005)

      This report includes numerous citations of operational and geometric modifications impact crash types. Some of which are access management related.

Proposal for Incorporating Public Transit Provisions into a State Highway Access Management Code

up
Click here if you liked this information

Lutin, J. M., “Proposal for Incorporating Public Transit Provisions into a State Highway Access Management Code,” Transportation Research Record: Journal of the Transportation Research Board, No. 2171 , Transportation Research Board of the National Academies, Washington, D.C., (2010) pp. 52-56.

Pages