SPD-HARM User Needs (1)
91
User Type
User Need
Description
1
Vehicle operator
Need the vehicle to be connected wirelessly to the SPD-HARM system
Vehicles should be wirelessly connected using Connected Vehicle or other conventional wireless technologies
2
Vehicle operator
Need to obtain specific traffic information from the vehicle or in-vehicle wireless devices
Information such as traffic flow, speed, acceleration/deceleration, weather, incidents or other information impacting traffic conditions should be pulled from the vehicle.
3
Vehicle operator
Need information on recommended or required speeds and lanes of travel should be provided to drivers
In order to enable speed harmonization, recommend maximum speeds as well as recommended lanes of travel will be provided to drivers within the vehicles.
4
Vehicles
Need to exchange traffic flow and traffic condition information from other vehicles
To enable true speed harmonization, communication with other nearby vehicles on the roadway will be required.
5
Roadway System
Need to obtain information from traditional roadway sensor systems, in near real time, to assess roadway conditions
To aid in speed harmonization, the SPD-HARM system should obtain traffic flow and speed information from existing sensors (Vehicle Detection Sensors ) and other probe system sensors, if available