Clear Roads: Plug & Play II Presented by Thomas Peters, MnDOT Adapted from Scott Petersen, SRF Consulting Final Presentation for Clear Roads Project 14-04
Presentation Overview • Description of Need • Literature Review • Agency Survey Results • Industry Survey Results • Conclusion/Recommendations
Description of Need • Agencies need a standardized way to communicate with the plow fleet • Current software is generally proprietary and limits agency and equipment interoperability
Literature Review Communication Diagram Cellular Radio Link Wi-Fi
Literature Review DOTs commonly use AVL/GPS systems for: • Snow Control Efficiency • Vehicle Routing Efficiency • Vehicle Tracking in Remote Areas • Recording Vehicle Usage History • Obtaining Real-time Road Conditions • Measuring Bed Weight and Material Usage • Capturing Roadway Images Venner, M., GPS/AVL Technologies in Use at State DOTs. 2011.
Literature Review Example Protocol Source: Edelstein, J. Message Syntax Summary and Data Dictionary. 2013 .
Communications Schematic Office/Head End System On-Vehicle Devices Communications Data Management Controller Other Plug Non-Plug Spreader AVL Positioning and Play and Play Controller Devices Devices
Agency Survey Results Vehicle Data Types
Agency Survey Results Spreader Data Types
Agency Survey Results Other Data Types
Industry Survey • A survey was sent to freight industry representatives to learn about their methods for communicating information between freight trucks and management systems. • The freight industry generally uses proprietary “cloud - based” network operations centers to receive data from trucks.
Industry Survey Results • Freight data is generally more basic than the needs identified by the agencies: • Vehicle information directly accessible from the CAN bus • Location data • Driver and load data
Industry Survey Results • Primarily two off-the-shelf proprietary vehicle information systems are used by the large freight companies: • PeopleNet • Qualcomm’s Omnitracs • Some large freight companies have custom proprietary systems.
Industry Survey Results • It is generally been considered to be in the public’s interest to invest in open systems that encourage cooperation between vendors. • The needs of the winter maintenance community appear to be more extensive than those of the freight industry. Solutions developed for the freight industry do not currently meet the needs found during the agency survey
Conclusion/Recommendations Plug and Play should be a family of standards Snow plows have disparate sources of data that do not interoperate. Future systems and standards are being currently developed and implemented. A new master protocol that carries all data types is not feasible and therefore a family of standards is recommended.
Conclusion/Recommendations Plug and Play Family of Standards • Plug and Play Clear Roads Universal In-Cab Performance Specifications: Contains protocols for interconnecting AVL and spreader controller devices • NTCIP 1204: Contains many environmental conditions as well as location • J2735 and J2945: Dedicated Short Range Communications • MDSS protocols: Convey MDSS information to/from the driver interface and the head end system • Future protocols that meet the needs of the road/weather community
Conclusion/Recommendations FHWA Role State Procurement Role • • As automotive industry As states develop procurement communication standards are documentation, encourage the developed, FHWA will encourage industry to meet them to go through the systems standards/protocols. engineering process including • States need to develop requirements definition and to boilerplate procurement make sure the road/weather language that will facilitate the parameters are not overlooked. transition to Plug and Play standards.
Contact • Plug and Play Phase II – Clear Roads Project 14-04 • Subcommittee Lead: Allen Williams, Virginia DOT • Clear Roads Projects Manager: Greg Waidley, Clear Roads • Principal Investigator: Scott Petersen, SRF Consulting Group
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