This groundbreaking initiative and collaborative effort among the Coalition, University of Maryland and INRIX has been providing comprehensive and continuous real-time travel information for two years. South Carolina and Florida have recently been added to the core area of New Jersey through North Carolina.

Objective: The objective is to create a seamless traffic monitoring system that spans the eastern seaboard delivering travel times and speeds on freeways and arterials using probe technology. The INRIX system fuses data from various sources to present a comprehensive picture of traffic flow. Member agencies have found numerous uses for the data beyond simply travel information (the original use at the project inception).

Applications in Use: Several agencies are using the probe data for their 511, web and phone service. In addition, other agencies are using the vehicle probe data to calculate travel times and post them on message signs. Performance measures and travel time reliability, particularly in congestion prone areas, are being calculated using real-time and archived Vehicle Probe Project (VPP) data. I-95 Corridor Coalition member agencies use the project monitoring site to observe traffic patterns within its boundaries, but especially across state lines to anticipate incidents and congestion. VPP data is being used as input to the Coalition’s long-distance trip planner website at www.i95travelinfo.net, as well as variable message signs and kiosks at airports, welcome centers and regional malls to enhance traveler information.

Coverage: The initial core area (approximately 1,500 centerline freeway miles) from New Jersey through North Carolina has been expanded to more than 4,700 centerline miles and includes the entire limited access road network in New Jersey, and the entire interstate systems for North Carolina and South Carolina and parts of Florida.

Data Validation: A comprehensive ground truth testing of this traffic data was conducted in the fall of 2008 by the University of Maryland. Ongoing validation is conducted monthly in various states throughout the Corridor to ensure data quality. Using innovative Bluetooth reader technology, the validation studies compare observations of ground-truth vehicle speeds against real-time speed information provided by INRIX for the same segments. Approximately 1,200 hours of data are collected each month. Between October 2008 and April 2010, almost 19,000 hours of data were collected and validated. Contract payment is tied directly to the validation results and all specifications for data quality have been exceeded throughout the project. All data and analysis are made available to the transportation community for review.

The Future: Plans are being developed to provide expanded coverage for all states along the I-95 Corridor. This presents a unique opportunity for continuous roadway monitoring coverage along I-95 and other important routes from Maine to Florida and for all Coalition states to benefit from the Vehicle Probe data.

Go to the “Highlights” tab to view the Vehicle Probe Project documents

Procurement Agency: Maryland SHA
Project Contact: Bill Stoeckert, I-95 Corridor Coaltiion

The objective of this project is to create a seamless traffic monitoring system that spans the eastern seaboard delivering travel times and speeds on freeways and arterials using probe technology. The INRIX system fuses data from various sources to present a comprehensive picture of traffic flow. Member agencies have found numerous uses for the data beyond simply travel information (the original use at the project inception).

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

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Available Information on the Vehicle Probe Project

The Vehicle Probe Project is a groundbreaking initiative and collaborative effort among the Coalition, University of Maryland and INRIX and has been providing comprehensive and continuous real-time travel information for more than two years. Member agencies have found numerous uses for the data beyond simply travel information.

There are many project documents available for your use and reference as listed below.

• Contract Documents – Includes the original contracting documents as well as two versions of the Data Use Agreement. A Data Use Agreement needs to be executed to obtain project data. 
• Data Validation – Includes reports on all of the data validation efforts to date.
• General Information & Press – Includes a one page overview of the project as well as several papers on project benefits.
• Coverage Expansion – Includes documents on the expansion of coverage for member agencies.
• Technical Information – Includes the Project Interface Guide and other technical papers to assist in the use of the project data. The coverage maps of the areas within the core states are also provided.
• Project Presentations – Includes the presentations and meeting minutes for each of the Vehicle Probe Project Team status webcasts held and other pertinent presentations.

Please click on the sections listed below to go directly to the desired topic or scroll down through the various sections. Should you have any questions, please contact William Stoeckert at 774.207.0367 or wstoeckert@yahoo.com.

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)
Validation of INRIX Data – Monthly Report – February 2010 (Virginia)
Method for Estimation of Travel Times for Multiple TMC Segments (February 2010)
Validation of INRIX Data – Monthly Report – March 2010 (Pennsylvania)
Validation of INRIX Data – Monthly Report – April 2010 (New Jersey)
Validation of INRIX Data – Monthly Report – April 2010 (Maryland)
Validation of INRIX Data – Monthly Report – June 2010 (North Carolina)
Validation of INRIX Data – Monthly Report – July 2010 (Delaware)

General Information & Press

Document	Link
Overall Vehicle Probe Project Benefits Paper - August 2010
Project One-pager (updated July, 2010)
North Carolina/South Carolina Vehicle Probe Project Benefits Paper - June, 2010
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
Improvement of Real-Time Data Paper (May 2010)
Confidence Value and Smoothing Paper (April 2010)
Project Interface Guide 3.3 (updated June, 2010)
NCDOT Travel Time Information (July, 2009)
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
August 10, 2010 | Project Status Webcast	Vehicle Probe Presentation:
June 30, 2010 | Project Status Webcast	Vehicle Probe Presentation:
May 26, 2010 | Project Status Webcast	Vehicle Probe Presentation:
April 20, 2010 | Project Status Webcast	Vehicle Probe Presentation:
March 16, 2010 | Project Status Webcast	Vehicle Probe Presentation:
	3 Year Plan Info:
February 9, 2010 | Project Status Webcast	Vehicle Probe Presentation:
	Ramp Locations:
January 10, 2009 | TRB Annual Meeting
Session 348 – SafeTrip-21	SAFETRIP-21 and the I-95 Corridor Coalition:
Session 531 – Vehicle Probe Project	Vehicle Probe Project – Overview:
Session 531 – Vehicle Probe Project	Using VP data to put Automated Travel Times on Dynamic Message Signs in MD:
Session 531 – Vehicle Probe Project	North Carolina’s Application of the INRIX data:
Session 703 – Nontraditional Data Sources	Vehicle Probe Project – What's New, What's Next:
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: