Samenvatting
The volume is divided into two parts. In Part One, the results of a series of telephone contacts with thirty-one state, county, and municipal police agencies are described. Part Two presents detailed case studies for UDA enforcement procedures. The major focus of the procedural studies is the speeding UDA. Procedures for enforcing following too closely and driving left of center were also sought, but it was found that few agencies have specific procedures for enforcing those two UDAs.