Results from Collision Avoidance System Trials in NL

Creation date: 22 October 2009

The Netherlands have conducted a large-scale operational test for several collision avoidance systems for trucks. The objectives of these systems are to reduce the number of accidents with trucks, to gain insight in their effect on traffic flows and to test their effectiveness. For eight months, 2,400 lorries with different systems were monitored and all the data were recorded in the recording system.

The five systems which were tested are aimed at limiting accidents. In addition, a separate registration system was tested.

• Headway Monitoring & Warning (HMW) and Forward Collision Warning (FCW)
• Lane Departure Warning Assist (LDWA)
• Adaptive Cruise Control (ACC)
• Directional Control (DC)
• Black Box Feed Back (BBFB)Research questions

The following four research questions were central in the field operational test:

1. How effective were the accident prevention systems that were tested?
2. What is the effect of accident prevention systems on traffic safety?
3. What is the effect of accident prevention systems on the flow of traffic?
4. Can the authorities use this test as an incentive to stimulate the use of accident prevention systems?

The systems reduce the risks of accidents, with the most important indicators being:

• longer following times between vehicles;
• reduced risk of tipping;
• driving less close to the vehicle in front;
• fewer unintentional line crossings;
• driving at a more regular speed.

More information on the test and the results can be obtained from brochure 'Accident prevention systems for lorries'.

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