Paul van Koningsbruggen and Dave Marples of Technolution BV describe, using a national example from the Netherlands, how smart add-ons to traffic control centres combine to increase cross-centre capabilities and cost-efficiency. Increasingly, traffic management is becoming the natural partner of the civil engineer, improving flows over existing infrastructure to deliver an alternative to laying more blacktop. As in any emerging market, the first steps towards mature traffic management have not necessarily r