Samenvatting
The research has enclosed the following aspects (1) a study to the methods of measurement and to the influence of the execution of the measurement on the traffic behaviour; (2) study to the stability of a traffic flow on a straight road section without geometrical or structural dis-continuities of a four-lane highway with separated lanes and the influence of recommended speeds on the stability; and (3) study to the influence of speed limits on the behaviour in curves in 2 lane highways.