Sensor Technologies and Data Requirements for ITS Applications

Beginning with descriptions of parameters that characterize the flow of vehicles on freeways, arterial roads and feeder routes, this hands-on manual examines intrusive and non-intrusive traffic sensors and associated technologies that measure traffic flow and assist in the management of congestion. It contains information about sensors that provide wider coverage areas and a larger variety of traffic flow parameters than the more conventional inductive loops. The operating characteristics of these measuring devices is illuminated through detailed discussions of traffic-responsive arterial signal control, freeway incident detection, ramp metering, electronic toll and traffic management, commercial vehicle operations, advanced traveller information systems, and sensor installation and maintenance issues.