Abstract
There is a need for an alternative criterion for accidentson which traffic safety can be evaluated. Cne of the methodis the conflict techniques. A useful measure to describethe severity of an interaction between road users is the"time-to-collision" (TTC). The TTC is a continuing function,of time and can be shown in a graphical curve. In this papera technique is described by which it is possible to deter-mine TTC curves objectively by analyzing video recordingsquantitatively.