1. A traffic information system comprising: a plurality of monitor stations spaced apart along a route, each monitor station adapted to provide image signals representative of the traffic existing at the particular location of the monitor station; identification means for identifying the image signals as being originated by the respective monitor station which provided those image signals; a controller which receives the image signals and provides an information signal comprising a sequence of image signal segments, each image signal segment comprising image signals from one particular monitor station, the sequence of the image signal segments comprising a sequence corresponding to the sequence of monitor stations encountered by the traffic on the route; and a display unit which receives the information signal and in response to each segment of image signals, displays images of traffic corresponding to those image signals and the identification of the respective monitor station which provided those image signals.