Traffic Probe Basics
Travel time between highway segments is an important measure to highway engineers, system operators, and public safety personnel. Accidents, weather, and congestion play a role in daily commute times and route decisions for travelers. A number of techniques such as magnetic sensors, video imaging or radar detection platforms are available for determining traffic speed, volume, and other metrics essential for planning, safety, access control, or just for reporting traffic conditions between exits. These systems ultimately all have limitations in cost, function, and reliability; and are not always effective in producing the detail or accuracy required to achieve the results desired.
In areas where toll transponders are used by even a small percentage of the traffic population, Sirit’s Traffic Management solution has proven to be an easily implemented and cost effective answer to monitoring commute time or traffic patterns. By deploying Sirit readers at multiple points along designated intervals of a toll highway or freeway, and by connecting those points by wire or wireless to a central host, travel time and traffic flow can be closely monitored in real time accumulating valuable data for traffic management or safety engineering.
Sirit Offers Custom Software Solutions and Product Integration
Sirit’s experienced Toll Solutions software and integration team is well equipped to design, deliver, and integrate a complete probe-based data collection system to your traffic management specifications. Design, project management, integration, and RFID solutions for the intelligent transportation industry are our core strengths.
Sirit’s IDentity Flex RFID reader is designed specifically for road segment monitoring across single or multiple lanes under all weather and traffic conditions. Using the latest generation radio frequency identification (RFID) technology and an embedded base of Caltrans Title 21 compatible toll transponders, accurate vehicle identification is reported to the host system using Sirit’s traffic probe protocol. This robust protocol was uniquely developed by Sirit to rapidly and accurately convey the tag identification, location of read point, time of read, and channel to the host controller. The protocol also includes an impressive array of diagnostic and monitoring features for testing or upgrading functionality.