The I-95 Corridor Coalition’s Vehicle Probe project is a groundbreaking initiative and collaborative effort among the Coalition, University of Maryland and INRIX providing comprehensive and continuous real-time travel information to members. The contract was awarded in December 2007, and data for a core area from New Jersey through North Carolina, has been provided since July 1, 2008. The project area has been expanded to include South Carolina.

Benefit to Members: I-95 Corridor Coalition member agencies benefit from the Vehicle Probe project by receiving travel time and speed data to support the dissemination of travel information using 511 and websites; display of travel times on variable message signs, traffic management during incidents and performance measurement. Coalition members are able to use this contract to expand travel data coverage within their jurisdictions, develop websites and interface with existing traffic management systems.

Coverage: The initial core area (approximately 1500 centerline miles) from New Jersey through North Carolina has been expanded to over 4100 centerline miles and includes the entire limited access road network in New Jersey, and the entire interstate systems for North Carolina and South Carolina.

Validation: In the fall of 2008, the University of Maryland conducted a comprehensive ground truth testing of this traffic data. Over 100 miles of highways across Delaware, Maryland, New Jersey and Virginia were examined in detail over four months. Using innovative Bluetooth reader technology, the study compared observations of ground-truth vehicle speeds against real-time speed information provided by INRIX for the same segments. The initial validation concluded that INRIX is meeting the specifications of the contract to confidently develop applications to meet the needs of the Coalition and its members. The validation effort continues on a monthly basis for each state and is revealing similar results.  To date over 11,000 hours of data have been validated.  Contract payment is tied directly to the validation results.  All data and analysis are made available to the transportation community for review.

Funding: Coalition funding is underway for the first three years of the contract. Additional funding will be considered for support of the applications with the data and additional expansion based on success of the project and support of the members.

Procurement Agency: Maryland SHA
Project Contact: Bill Stoeckert, I-95 Corridor Coaltiion; Phil Tarnoff, University of Maryland; Stan Young, University of Maryland

The objective of this project is to acquire travel times and speeds on freeways and arterials using probe technology. While the dominant source of data is obtained from fleet systems that use GPS to monitor vehicle location, speed, and trajectory, other data sources such as sensors may also be used. The INRIX system fuses data from various sources to present a comprehensive picture of traffic flow.

View PDF file of Scope of Projects 14Ba-2B and 15a-2V.

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Acquiring Travel Times and Speeds Using Probe Technology

The I-95 Corridor Coalition’s Vehicle Probe project is a groundbreaking initiative and collaborative effort among the Coalition, University of Maryland and INRIX providing comprehensive and continuous real-time travel information to members. The contract was awarded in December 2007, and data for a core area from New Jersey through North Carolina, has been provided since July 1, 2008. The project area has been expanded to include South Carolina.

Objective: The objective of this project is to acquire travel times and speeds on freeways and arterials using probe technology. While the dominant source of data is obtained from fleet systems that use GPS to monitor vehicle location, speed, and trajectory, other data sources such as sensors may also be used. The INRIX system fuses data from various sources to present a comprehensive picture of traffic flow.

Benefit to Members: I-95 Corridor Coalition member agencies benefit from the Vehicle Probe project by receiving travel time and speed data to support the dissemination of travel information using 511 and websites; display of travel times on variable message signs, traffic management during incidents and performance measurement. Coalition members are able to use this contract to expand travel data coverage within their jurisdictions, develop websites and interface with existing traffic management systems.

Coverage: The initial core area (approximately 1500 centerline miles) from New Jersey through North Carolina has been expanded to over 4100 centerline miles and includes the entire limited access road network in New Jersey, and the entire interstate systems for North Carolina and South Carolina.

Validation: In the fall of 2008, the University of Maryland conducted a comprehensive ground truth testing of this traffic data. Over 100 miles of highways across Delaware, Maryland, New Jersey and Virginia were examined in detail over four months. Using innovative Bluetooth reader technology, the study compared observations of ground-truth vehicle speeds against real-time speed information provided by INRIX for the same segments. The initial validation concluded that INRIX is meeting the specifications of the contract to confidently develop applications to meet the needs of the Coalition and its members. The validation effort continues on a monthly basis for each state and is revealing similar results. To date over 11,000 hours of data have been validated. Contract payment is tied directly to the validation results. All data and analysis are made available to the transportation community for review.

Funding: Coalition funding is underway for the first three years of the contract. Additional funding will be considered for support of the applications with the data and additional expansion based on success of the project and support of the members.

Updated: December 2009

Below are Coalition's Vehicle Probe posted reports:

Contract Document | Data Validation | General Information & Press | Coverage Expansion | Technical Information | Project Presentations

Contract Documents

Document	Link
Original RFP
INRIX Proposal
Response to Questions #1
Response to Questions #2
Data Use Agreement v 1 - with UMD
Data Use Agreement v 2 - directly with INRIX
Section 6.0 DATA OWNERSHIP AND DATA LICENSING
Payment Formula Method–March 2009 (Modification M009)

Data Validation

Document	Link
Data Validation Plan
Data Validation Process – Revised: May 2009
Bluetooth Concept and Use Brochure
Data Validation - June 2009 Comparison
Validation Summary Report – Executive Summary – January 2009
Validation of INRIX Data – Full Report - January 2009
Validation of INRIX Data – Monthly Report - February 2009 (Central Virginia)
Validation of INRIX Data – Monthly Report - February 2009 (North Carolina)
Validation of INRIX Data – Monthly Report - May 2009 (Delaware)
Validation of INRIX Data – Monthly Report - May 2009 (Maryland)
Validation of INRIX Data – Monthly Report - May 2009 (Northern New Jersey)
Validation of INRIX Data – Monthly Report - June 2009 (Northern Virginia)
Validation of INRIX Data – Monthly Report - August 2009 (Southern New Jersey)
Validation of INRIX Data – Monthly Report - August 2009 – (North Carolina)
Validation of INRIX Data – Monthly Report - September 2009 (Delaware)
Validation of INRIX Data – Monthly Report - October 2009 (New Jersey)

General Information & Press

Document	Link
Project One-pager
New Jersey Vehicle Probe Project Benefits Paper - January, 2010
Related Press Hall Monitor: Vehicles are set up to probe traffic conditions not just along I-95 but also on 1,000 miles of arterials featured in Roads & Bridges Source: TM+E April 2008 Volume: 12 Number: 2 Copyright © 2008 Scranton Gillette Communications I-95 Corridor Coalition Announces Vehicle Probe Initiative Coalition Vehicle Probe Project featured in Wall Street Journal 16-State Coalition Awards INRIX Ground Breaking, Multi-Million Dollar Contract for Delivery of Real-Time Traffic Information for the I-95 Corridor from Reuters (www.reuters.com) I-95 deal a ‘win-win’ for INRIX and DOTs from Traffic Technology (www.traffictechnologytoday.com) INRIX To Deliver Real-Time Traffic Information For I-95 Corridor from GPS Daily (www.gpsdaily.com) INRIX Wins Real-Time Traffic Contract for I-95 Corridor from Sensors (www.sensorsmag.com)

Coverage Expansion

Document	Link
Contracting Mechanisms
Sample Memorandum of Understanding

Technical Information

Document	Link
NCDOT Travel Time Information (July, 2009)
Project Interface Guide 3.2 (updated January, 2010)
CHART’s Travel Time Guidelines (December, 2008) Procedural Guidelines for Implementing Travel Time on DMS in CHART Appendix for the Procedural Guidelines for Implementing Travel Time on DMS in CHART
Coverage Maps Document Link New Jersey Newark Philadelphia Pennsylvania Delaware, Philadelphia, and Trenton Delaware Maryland Baltimore, Maryland Maryland - DC Washington, DC Virginia Northern Virginia Richmond Virginia Southern North Carolina North Carolina Northern North Carolina

Project Presentations

Date/Place	Presentations	Links	Minutes
January 7, 2010 | Project Status Webcast	Vehicle Probe Presentation:
November 10, 2009 | Project Status Webcast	Vehicle Probe Presentation:
September 30, 2009 | Project Status Webcast	Vehicle Probe Presentation:
August 25, 2009 | Project Status Webcast	Vehicle Probe Presentation:
July 16, 2009 | Project Status Webcast	Vehicle Probe Presentation:
June 9, 2009 | Project Status Webcast	Vehicle Probe Presentation:
June, 2009 | ITS America Annual Meeting	Vehicle Probe Project Overview:
	Validation Process:
	Filling the Data Gap-NJDOT:
	Bridging NC’s Data Gap:
	Using VP data for automatic TT on DMS in MD:
May 5, 2009 | Project Status Webcast	Vehicle Probe Presentation:
April 7, 2009 | Project Status Webcast	Vehicle Probe Presentation:
February 24, 2009 | Project Status Webcast	Vehicle Probe Presentation:
December 3, 2008 | Project Status Webcast
November, 2008 | ITS World Congress-NYC	Vehicle Probe Project Data Collection:
	Filling the Data Gap-NJDOT:
	Vehicle Probe Project Validation:
October 22, 2008 | Project Status Webcast	Vehicle Probe Presentation:
August 25, 2008 | Project Status Webcast	Vehicle Probe Presentation:
July 17 , 2008 | Project Status Webcast	Vehicle Probe Presentation:
May 21, 2008 | Project Status Webcast	Vehicle Probe Presentation:
	TMC Coverage Analysis:
April 2, 2008 | Project Status Webcast	INRIX Presentation:
April 11, 2008 | CT & ME DOT Introduction	INRIX Presentation:
	UMD Background: