attachment_5_RFP DOIT 2025-036.pdf
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- Attached to
- Traffic Data Management System (TDMS)
- Solicitation number
- RFP DOIT 2025-036
- Issued by
- Rockingham County, New Hampshire
About this file
This document is Appendix C-1.21 Station Links from the New Hampshire Department of Transportation's Request for Proposal (RFP DoIT 2025-036) for a Statewide Traffic Data Management System (TDMS). The appendix outlines specific vendor response requirements for demonstrating software capabilities in processing point-based traffic data and assigning it to roadway segments within the NHDOT Linear Referencing System (LRS). Vendors must provide a comprehensive written response detailing their approach for creating segment-based Annual Average Daily Traffic (AADT) from both short-duration and continuous traffic count data. The response must cover the complete workflow from data collection and processing to modeling AADT, including methodologies for extrapolating point-based data, handling missing or erroneous data, and validating estimated traffic volumes.
The vendor's response must specifically address how their proposed solution will efficiently manage and analyze different traffic data sources, harmonize potential discrepancies, and scale to cover all public roadways, including local roads maintained by other entities. Key requirements include demonstrating techniques for accounting for traffic trends, seasonal variations, and other relevant variables, as well as presenting strategies for ground-truth validation of AADT estimates. The appendix emphasizes the need for a robust solution that can handle high data volumes while maintaining performance and accuracy, with a focus on comprehensive coverage and reliable traffic data estimation across the entire New Hampshire road network.
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Text version
STATE OF NEW HAMPSHIRE
DEPARTMENT OF TRANSPORTATION
RFP DoIT 2025-036 PROCUREMENT FOR STATEWIDE
TRAFFIC DATA MANAGEMENT SYSTEM (TDMS)
APPENDIX C SUPPLEMENTAL
Appendix C-1.21
STATION LINKS
1. Summary
The purpose of this Appendix is for the Vendor to provide documenta�on and prove the so�ware’s ability to take point-based data from traffic data collec�on devices and assign the data to segments within the NHDOT Linear Referencing System (LRS). The Vendor shall provide responses as an Appendix to the Proposal.
2. Vendor Response Requirement
The Vendor is required to provide a wri-en response outlining their approach for crea�ng segment-based Annual Average Daily Traffic (AADT) from point-based traffic volume data collec�on, including both short-dura�on counts and con�nuous count sites. This response should at a minimum contain the following:
• The Vendor’s response should cover the complete workflow, from data collec�on and processing to the modeling or es�ma�on of AADT on all roadway segments.
• The Vendor’s response should detail the methodologies and algorithms used for extrapola�ng point-based data to segment-based data, taking into account factors like traffic trends, seasonal varia�ons, and other relevant variables.
• The Vendor’s response should include techniques for handling missing or erroneous data to ensure robust and accurate AADT es�mates.
• The Vendor’s response should demonstrate their Proposed Solu�on’s ability to manage and analyze both short-dura�on and con�nuous count data efficiently.
• The Vendor’s response should explain how their system harmonizes these different data sources and addresses any discrepancies or conflicts that might arise.
• The Vendor’s response should describe their strategy for scaling their Proposed Solu�on to cover all roadway segments, indica�ng how the system will handle the high volumes of data involved and how it will maintain performance and accuracy. The scaling discussion should include the Proposed Solu�on’s ability to include all public roads, including local roadways maintained by others.
• The Vendor’s response should also present their approach to validate the es�mated
AADT values, such as through ground-truth checks, sta�s�cal analysis, or comparison with historical data. This would provide confidence in the reliability and accuracy of the generated segment-based AADT figures.
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