Roadway Time Management Functional Area


'Roadway Time Management' provides foundational time keeping functionality that supports an accurate, synchronized time reference in ITS field equipment. It receives accurate time information from an external source and maintains a local time reference using an internal clock in between time synchronizations.

Included In

Ohio Turnpike Roadside ITS Equipment
Ohio DOT RWIS Stations
Ohio DOT Traffic Signal Roadway Equipment
Ohio DOT Automated Gate Closure Systems
Ohio DOT Speed Monitoring Roadside Equipment
Ohio DOT Variable Speed Limit Signs

Functional Requirements

01The field element shall acquire time sync data from an external Stratum–2 time source.
02The field element shall obtain time sync data from the System Monitor.
03The field element shall obtain time and position data from its local location and time data source.