The WIM controller must be accessible via a Web-based interface/dashboard with no local software installation required so real time data can be viewed and downloaded by multiple MDT staff (Traffic Data Collection and Motor Carrier Services employees). Data must be accessible in a non-proprietary format, displayable in real time and available for historical queries/calibration. The WIM controller must have both AC and solar power capabilities. The WIM controller must be able to interpret vehicle data based on inductive loop and sensor arrays consisting of both: 1) piezo-loop-piezo and 2) loop-piezo-loop-piezo configurations. The WIM controller must be compatible with a wireless cellular modem for data transmission and interface access. Must have preset lane inputs instead of lane cards to prevent corrosion related communication problems. Must be compatible with MS2’s Autopoll Extension for data acquisition. Must be compatible with MDT’s existing Kistler Lineas quartz piezoelectric sensors currently installed in roadways. Must be compatible with PrePass and Drivewyze weigh station bypass systems. The WIM controller must collect Individual Vehicle Records for each FHWA 1-13 vehicle type and have be configurable to add non-typical vehicles and vehicle configurations unique to Montana. The WIM controller must have sufficient on-board memory storage to last at least 2 months without overwriting data at sites experiencing 20,000+ vehicles/day.
