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Office of the Assistant Secretary for Research and Technology
ITS Joint Program Office

Application Areas

Probe Surveillance


This field-to-vehicle application area covers the interface between roadside equipment and vehicles that are equipped with a short range communications device. The probe data collected by the field equipment may include link travel times, average speeds, road conditions, environmental conditions, surface weather information, and any other data that can be measured and communicated by passing vehicles. The collected probe information could be sent to a center for processing and distribution.
This graphic shows the scope of the Field to Vehicle Probe Surveillance application area.  This scope is described in the preceding text.
National ITS Architecture Interface
This application area includes the dedicated short range communications interface between the Vehicle Subsystem (VS) and the Roadway Subsystem (RS) and is used to determine environmental and traffic conditions based on probe information collected from passing vehicles. In a basic implementation, the probe data could be limited to time stamped unique identifiers that can be used to measure a vehicle’s progress through the network. In more advanced implementations, the vehicle may report current position, speed, and heading and snapshots of recent events including starts and stops, speed changes, and other information that can be used to estimate traffic conditions. Additionally, data from vehicle safety systems (e.g., measured air temperature, exterior light status, wiper status, traction control status, anti-lock brake status) can be transmitted by the VS to the RS and used to estimate environmental conditions.

Applicable Standards

In general, the following standards are applicable to Probe Surveillance deployments. To determine which specific standards are applicable for a deployment you will need to determine which architecture flows will be needed for the Probe Surveillance piece of your deployment. Contact your local FHWA ITS Division Specialist or an ITS Standards Program Field Support Team contact

Standard Development Status
ASTM E2213-03 Standard Specification for Telecommunications and Information Exchange Between Roadside and Vehicle Systems - 5 GHz Band Dedicated Short Range Communications (DSRC) Medium Access Control (MAC) and Physical Layer (PHY) Specifications; Published
IEEE 1609.2-2016 Standard for Wireless Access in Vehicular Environments - Security Services for Applications and Management Messages; Published
IEEE 1609.3-2016 Standard for Wireless Access in Vehicular Environments (WAVE) - Networking Services; Published
IEEE 1609.4-2016 Standard for Wireless Access in Vehicular Environments (WAVE) - Multi-Channel Operation; Published
SAE J2735 Dedicated Short Range Communications (DSRC) Message Set Dictionary; Published
Deployment Resources
Deployment resources can be found in the deployment resources section.