EngineeringAutomotive EngineeringGlobal Navigation Satellite SystemsTransportTransportationIntelligent Transportation SystemsRoad SafetyRoad TransportTraffic EngineeringTraffic SafetyTransportation SafetyAdaptive Speed ControlDriver Monitoring SystemsGlobal Positioning SystemIntelligent Speed AdaptationMaximum SpeedRoad AdministrationRoad Safety EngineeringSpeed
Most drivers know the maximum speed at which they should be traveling, but many exceed it. Speed is one of the most important factors when it comes to determining the severity of traffic accidents. This article discusses a governmental decision by the Swedish National Road Administration to undertake a large-scale trial involving intelligent speed adaptation (ISA) in urban areas in an effort to help alert motorists if they are driving too fast. This technology will be tested in 4 trial areas and will increase motorists' knowledge of: how to use ISA and related attitudes; the impact on road safety and the environment; the integration of these systems in cars; and prerequisites for large-scale use. ISA will also help enable drivers to understand the consequences and dangers of exceeding the speed limit. Two different technologies are being employed: 1) global positioning satellites with digital maps and 2) roadside transmitters.