Samenvatting
The central objective of the study was to find costs and benefits of installing emergency telephones on all-purpose roads. The benefits are: (1) to road users requiring assistance: peace of mind, time savings, life saving due to rapid response of emergency services, reduced exposure to hazard; and (2) benefits to other road users: reduced congestion in the event of accidents, reduced number of secondary accidents. The following conclusions can be drawn: all the tested options provide a very high economic return, benefit/cost ratios are between 8:1 and 17:1.