TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations.
The report is structured to correspond to chapters in the American Association of State Highway and Transportation Officials' A Policy on Geometric Design of Highways and Streets, more commonly referred to as the Green Book.
NCHRP Synthesis 432 is an update of NCHRP Synthesis 299 on the same topic published in 2001.
Table of Contents
|Organization of Report||4-4|
|Relationship to Other Documents||5-5|
|Summary of Key Findings||10-11|
|Summary of Key Findings||18-19|
|Allocation of Traveled Way Width||20-22|
|Summary of Key Findings||32-34|
|Effect of Skew||35-35|
|Auxiliary Lane Design||36-37|
|Intersection Sight Distance||38-38|
|Pedestrian and Bicycle Facilities||50-50|
|Summary of Key Findings||54-57|
|Design of Ramps and Ramp Terminals||58-59|
|Alternative Interchange Designs||60-62|
|Summary of Key Findings||63-64|
|Summary of Findings||65-70|
|Recommendations for Further Research||71-72|
|Abbreviations used without definitions in TRB publications||81-81|