Submitted by: Technical Traffic Solution A/S
Implemented country: Denmark
Title: Dynamic Optimizing of Green Wave for Energy Savings in Denmark

When vehicles stop for red, road users and the surroundings are subjected to additional cost in comparison with a situation where the particular vehicle does not stop unintentionally. The costs to road users are those of extra petrol consumption for idling as well as additional consumption to accelerate back to the initial speed. There is additional wear of the vehicle caused by braking (tire and brake wear) as well as acceleration. An adaptive signal system is generally understood to be a control system that will currently and automatically adapt the functions of the intersections in an area to the actual traffic with a view to optimizing the flow of traffic. Initial experience gained with adaptive systems in Denmark and abroad demonstrates that there is great potential for improving traffic flow and air quality in urban areas. Even with relatively small investments, an extremely heavy socio-economic effect can be achieved that will typically produce a reduction in stops and delays of 10-15% for an effect on traveling time and energy consumption of 8-15% as well as a capacity for improvement ranging between 20 and 25%. Finally, it is expected that carbon particle pollution will be reduced considerably.

Category: Fire