Common Reasons to Consider Exceptions
Impacts to the natural environment
Social or right-of-way impacts
Preservation of historic or cultural resources
Sensitivity to context or accommodating community values
Construction or right-of-way costs
Risk Management Characteristics
Explicitly addresses uncertainty
Based on the best available information
Part of the decision-making process
We know that highways are the most dangerous facilities s on the face of the earth. AND we know that access related crashes represent over 55 percent of all reported accidents. We need to become more focused on Highway safety improvements In the last 10 years, over 430,000 dead. Guides and manuals are not enforceable – its actually the agencies engineering authority, usually through the chief engineer. It’s the opinion of the chief engineer, using guides and manuals as references, as compared to the wishes of the property owner.
Institute of Transportation Engineers, Traffic Engineering Handbook, 6th Edition, (2008)
Chapter 13 of this Handbook, Access Management, was authored by Philip Demosthenes and Vergil G. Stover. Chapter 13 includes an introduction to access management providing an historical perspective, a review of legal issues of interest to traffic engineers, and proceeds to present current practice in policies, programs and access related design elements.
TRBs National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts.
