Samenvatting
An evaluation of the results of two-year survey of incidents of wrong-way driving on Virginia highways revealed that the majority of them originated at diamond type, interchanges. On-site investigations of a number of the interchanges at which instances of wrong-way driving had been noted suggested several improvements. The report discusses measures for preventing wrong-way entries at interchanges and presents case studies of four of the interchanges visited. Some recommendations are given.