Evaluating Corridor Speed Management Strategies Using PeMS and Probe Vehicle Data

Utah Department of Transportation (UDOT) has recently adopted updated policies and guidance related to speed management and has begun implementing corridor treatments intended to better align vehicle speeds with roadway context. This project will evaluate how recently implemented speed management strategies affect operating speeds, travel times, and corridor traffic conditions on Utah roadways, with emphasis on strategies such as radar speed feedback signs, roadway narrowing or road diets, gateway features, landscaped medians, pavement markings, optical speed bars, rumble strips, signal timing adjustments, and other engineering treatments used to reduce excessive speeds and improve safety. The study will use available PeMS point-detector data and ClearGuide probe vehicle data to support before-and-after evaluations across selected corridors and roadway contexts, including urban arterials, suburban corridors, and rural highways where feasible. The results will provide UDOT with practical guidance on the effectiveness of speed management treatments under Utah conditions and will produce an evaluation framework that UDOT staff can apply to future speed management projects using existing data sources. Where sufficient data are available, the study may also include a limited descriptive review of crash trends to provide additional safety context.

Language

• English

Project

• Status: Active
• Funding: $80,000.00
• Contract Numbers:

  278216

• Sponsor Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Managing Organizations:

  Utah Department of Transportation

  Research and Innovation Division
  Salt Lake City, UT  United States  84114
• Project Managers:

  Jensen, Travis

• Performing Organizations:

  Felsburg Holt & Ullevig

  Salt Lake City, Utah  United States 
• Principal Investigators:

  Zlatkovic, Milan

• Start Date: 20260813
• Expected Completion Date: 20271031
• Actual Completion Date: 0
• USDOT Program: Federal Highway Administration
• Subprogram: Highway Safety
• Subprogram: Speeding

Subject/Index Terms

• TRT Terms: Before and after studies; Data analysis; Operating speed; Safety analysis; Speed control; Travel time
• Geographic Terms: Utah
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01999376
• Record Type: Research project
• Source Agency: Utah Department of Transportation
• Contract Numbers: 278216
• Files: RIP, STATEDOT
• Created Date: Aug 15 2026 12:25PM