Integrated Mobile Observations 3.0: Connected Vehicles for Road Weather Management - Project Summary Report
The solution implemented was designed to link Connected Vehicles to roadside units (RSUs) and intersection controllers, and then transmit the data to transportation management centers (TMCs). The data collected included ambient temperature, surface temperature, humidity, barometric pressure, and dew point along with other vehicle data such as position, speed, and acceleration.
The size and scope of coverage was limited by requirements to have line-of-sight (LOS) Dedicated Short-Range Communications (DSRC) communications between vehicles and RSUs as well as the ability of the system to quickly process and transmit data to back-office systems.
The project demonstrated the viability of using Connected Vehicle systems and data to identify weather related threats and hazards. Combining this information with other fixed and mobile data can provide the additional coverage and details needed to ground truth local data during weather events.
- Antennas installed on truck cabs are better than antennas installed on truck bed toppers.
- Installers should use a consistent measurement process for collecting metadata for the locations where devices are installed on vehicles. Once installed, it is necessary to measure the locations of the sensors and tires in relation to the GPS antenna. It helps having two people doing those tasks to be more accurate.
- Agencies should have a process for tracking shock degradation and compare to baseline for the vehicle.
Infrastructure Field Devices
- Agencies and field personnel should ensure compatible interface and applications between RSUs and traffic signal controllers.
- Use multiple communication protocols (e.g., Cellular, WiFi, DSRC) to transfer data from the mobile devices to back-office systems to optimize communication channels based on the type and volume of data required for each use case.