National Cooperative Highway Research Program NCHRP Project 20-5
Synthesis of Highway Practice 316 Design Exception Practices
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 316: Design Exception Practices describes the range of design exception practices among state transportation agencies, and discusses problems and suggested improvements based on the experience of state agency personnel. This topic is published at https://www.trb.org/news/blurb_detail.asp?id=1637