TxDOT District Maintenance and Construction Vehicles Functionality

Subsystem Description

The Maintenance and Construction Vehicle Subsystem (MCVS) resides in a maintenance, construction, or other specialized service vehicle or equipment and provides the sensory, processing, storage, and communications functions necessary to support highway maintenance and construction. All types of maintenance and construction vehicles are covered, including heavy equipment and supervisory vehicles. The subsystem provides two-way communications between drivers/operators and dispatchers and maintains and communicates current location and status information. A wide range of operational status is monitored, measured, and made available, depending on the specific type of vehicle or equipment. For example, for a snow plow, the information would include whether the plow is up or down and material usage information. The subsystem may also contain capabilities to monitor vehicle systems to support maintenance of the vehicle itself and other sensors that monitor environmental conditions including the road condition and surface weather information. This subsystem can represent a diverse set of mobile environmental sensing platforms, including wheeled vehicles and any other vehicle that collects and reports environmental information.

Functional Area: MCV Barrier System Control

Control automatic or remotely controlled gates and other barrier systems from a maintenance and construction vehicle.

ID Requirement Status
1 The vehicle shall remotely control barrier systems. Barrier systems include automated or remotely controlled gates, barriers and other systems that manage entry to roadways. Medium-term
2 The vehicle shall collect barrier system operational status. Medium-term
3 The vehicle shall collect barrier system fault data. Medium-term

Functional Area: MCV Roadway Maintenance and Construction

On-board systems that support routine non-winter maintenance on the roadway or right-of-way. Includes landscape maintenance, hazard removal (roadway debris, dead animals), routine maintenance activities (roadway cleaning, grass cutting), and repair and maintenance of equipment on the roadway.

ID Requirement Status
1 The maintenance and construction vehicle shall track the location and status of safety systems on-board the vehicle. Medium-term
2 The maintenance and construction vehicle shall respond to control information from the center to allow remote operation of the on-board vehicle systems. These systems include routine maintenance equipment for cutting, repairs, hazard removal, etc. Medium-term
3 The maintenance and construction vehicle shall monitor materials information including remaining quantity and current application rate of materials on the vehicle. Medium-term
4 The maintenance and construction vehicle shall respond to dispatch information from the center, presented to the vehicle operator for acknowledgement and returning status. Existing
5 The maintenance and construction vehicle shall send operational data to the center including the operational state of the maintenance equipment (e.g., blade up/down, spreader pattern), types and quantities of materials used for construction and maintenance activities, and a record of the actual work performed. Medium-term

Functional Area: MCV Vehicle Location Tracking

On-board systems to track vehicle location and reports the position and timestamp information to the dispatch center.

ID Requirement Status
1 The maintenance and construction vehicle shall track its current location. Medium-term
2 The maintenance and construction vehicle shall send the time stamped vehicle location to the controlling center. Medium-term

Functional Area: MCV Vehicle Safety Monitoring

On-board systems to detect vehicle intrusions and warn crew workers and drivers of imminent encroachment. Crew movements are monitored so that the crew can be warned of movement beyond the designated safe zone. Used for stationary work zones or in mobile applications where a safe zone is maintained around the moving vehicle.

ID Requirement Status
1 The maintenance and construction vehicle shall detect that a vehicle has intruded upon the boundary of a work zone. The boundary of the work zone represents an area around the maintenance and construction vehicle, which may be stationary or moving. Medium-term
2 The maintenance and construction vehicle shall receive work zone warnings from the field equipment at the roadside, other maintenance and construction vehicles. Medium-term
3 The maintenance and construction vehicle shall present work zone warnings to the field personnel using direct warning signals or in-vehicle signage functions. Medium-term
4 The maintenance and construction vehicle shall monitor the crew movements to identify when a crew member is crossing the boundary between a work zone and vehicle traffic and issue an alert to the crew member. Medium-term
5 The maintenance and construction vehicle shall provide status of the work zone warning systems to the center. Medium-term

Functional Area: MCV Work Zone Support

On-board systems that provide communications and support for local management of a work zone.

ID Requirement Status
1 The maintenance and construction vehicle shall monitor, operate, and control work zone devices located at or alongside the roadway. The devices operated on board the vehicle include driver information devices (e.g. dynamic message signs) and work zone intrusion detection and alert devices. Medium-term
2 The maintenance and construction vehicle shall provide an interface for field personnel to input status of their work zone activities. Medium-term