Phase II - Using Capacity Adjustments for Connected and Autonomous Based on Various Market Penetration Rates for Long Range Planning and Scenario Analysis

The capability of Connected and Autonomous Vehicles (CAV) is progressing at a faster rate with particular focus on technological performance, and its wide-ranging potential impacts on safety, operation, and regulatory issues. For example, CAVs could travel closer together at smaller headway which enables higher capacity through existing infrastructure. Existing CAV research is often limited in terms of scope, scale, approach, or underlying assumptions, and has not sufficiently addressed questions about the large-scale impacts of CAV on highway capacity, which are required by decision-makers to inform policies. Moreover, the Highway Capacity Manual (HCM) is at risk of becoming outdated or limited in relevance/usefulness as the CAV technologies become more prevalent on the market. The current HCM has multiple limitations regarding CAV analysis including: (1) Capacity-related HCM methods cannot be used to evaluate projects or facilities that would utilize CAV technology, as the impacts of CAV strategies are not accounted for. (2) Lack of existing analysis guidance regarding the suitability of the HCM for analyses involving CAV strategies. (3) Limited consideration of market penetration and the effects they will have on the realized outcomes associated with CAV technologies on various facilities. These limitations drive a critical need to develop HCM capacity adjustments (CCAV) to be prepared for future CAV operations under varying levels of volume and market penetration. Phase II Objectives: The HCM CAV pooled fund study is on track to meet all original study goals within the year 1 and 2 scope, and has successfully developed CAV adjustment factors for the HCM. This extension scope builds on the existing work with a primary focus on technology transfer, dissemination of results, and training. The specific tasks proposed for the Year 3 extension are as follows: Task A: Scenario Development, Task B: Training Materials, and Task C: Outreach and Webinars.

• Record URL:
  http://www.pooledfund.org/Details/Study/623

Language

• English

Project

• Status: Active
• Funding: $453930
• Contract Numbers:

  TPF-5(371)

• Sponsor Organizations:

  Connecticut Department of Transportation

  2800 Berlin Turnpike
  Newington, CT  United States  06131

  Texas Department of Transportation

  125 E. 11th Street
  Austin, TX  United States  78701-2483

  Maryland Department of Transportation State Highway Administration

  707 N. Calvert Street
  Baltimore, MD  United States  21202

  North Carolina Department of Transportation

  P.O. Box 25201
  1 South Wilmington Street
  Raleigh, NC  United States  27611

  Oregon Department of Transportation

  355 Capitol St. NE
  Salem, OR  United States  97301-3871

  Washington State Department of Transportation

  Transportation Building
  Olympia, WA  United States  98504

  Arkansas Department of Transportation

  Little Rock, AR  United States 

  Indiana Department of Transportation

  Indiana Government Center North
  100 North Senate Avenue
  Indianapolis, IN  United States  46204-2249

  Utah Department of Transportation

  4501 South 2700 West
  Project Development
  Salt Lake City, UT  United States  84114-8380

  Florida Department of Transportation

  Research Center
  605 Suwannee Street MS-30
  Tallahassee, FL  United States  32399-0450
• Project Managers:

  Knudson, Tony

• Start Date: 20180816
• Expected Completion Date: 20220707
• Actual Completion Date: 0
• Source Data: RiP Project 42347

Subject/Index Terms

• TRT Terms: Automated highways; Autonomous vehicles; Connected vehicles; Forecasting; Highway capacity; Market penetration; Simulation; Traffic crashes; Traffic incidents; Traffic volume; Weather conditions
• Identifier Terms: Highway Capacity Manual
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management; Planning and Forecasting; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 01641395
• Record Type: Research project
• Source Agency: Federal Highway Administration
• Contract Numbers: TPF-5(371)
• Files: RIP, USDOT, STATEDOT
• Created Date: Jul 23 2017 2:54PM