Adviessnelheden. Beschouwingen over een verruiming van de toepassing. Consult in opdracht van de Rijkswaterstaat, Dienst Verkeerskunde (DVK).

Recommanded speeds are mostly given in bends to improve traffic safety. Caution is wanted for the installation of such signs on other places. Recommended speeds must be perceived by the road users as a reality, otherwise they loose their credibility. People will less comply to the recommended speed signs even on places where such can be dangerous. Recommended speeds are necessary when the road user true enough perceives a discontinuity, but cannot determine the safe proper speed.