Traffic signals are placed at locations with high traffic flow and where there is significant risk to road users. By using red light enforcement cameras it is possible to minimize the risk and enhance traffic safety schemes. The PoliScan^redlight laser-based enforcement system from VITRONIC is a non-invasive solution which operates without the need for in-road equipment such as sensors and loops. It can be combined with the PoliScan^speed system to provide both red light and speed enforcement from a single housing: speed-on-green.