NCHRP. Modern Roundabout Practices [Synthesis 264]. 1996
“This synthesis presents information on current practices with respect to the planning, design, and operation of modern roundabouts in the United States. It will be of interest to state and local highway design engineers, traffic engineers, maintenance engineers, as well as officials concerned with roadway safety. It will also be useful to design and traffic engineering consultants who may be assisting communities with the implementation of roundabouts” (www.trb.org, n.d.). Available online at:
http://trb.org/publications/nchrp/nchrp_syn_264.pdf
NCHRP. Design Speed, Operating Speed, and Posted Speed Practices [NCHRP Report 504]. 2003
Available online at: http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_504.pdf
NCHRP. Evaluating Intersection Improvements: An Engineering Study Guide [NCHRP Report 457]. 2001
An enhanced online version of the report is available at http://onlinepubs.trb.org/onlinepubs/nchrp/esg/esg.pdf
NCHRP. Impacts of Access Management Techniques [NCHRP Project 3-52]. 1998
This report may be ordered online through TRB’s website at: http://www.trb.org/trbnet/projectdisplay.asp?projectid=797
NCHRP. Recommended Procedures for the Safety Performance Evaluation of Highway Features [Report 350]. 1992
This document is no longer in print, but may be accessed through the following link:
http://safety.fhwa.dot.gov/roadway_dept/road_hardware/nchrp_350.htm.