Overview of NCHRP 3-99: Access Management Application Guidelines (AMAG)June 1, 2010

Marc Butorac, PE, PTOE

AgendaAgenda

Definition of AMHistoryLatest AM ResearchCurrent Industry Issue with AM ResearchAMAG RoleOverview of AMAGAccess Management Perspectives

Access Management DefinitionAccess Management Definition

Access management is the systematic implementation and control of the locations, spacing, design, and operations of driveways, median openings, interchanges, roundabouts, and street connections to a roadway.

- 2003 TRB Access Management Manual

History of Access ManagementHistory of Access Management

1902 - New Jersey Speedway Legislation

1914 - Westchester County, New York establishes “parkways” in urban areas.

1937 - New York and Rhode Island established specific statutes to design and build “freeways” which included the full or partial acquisition of abutting access rights to ensure the long-term, higher performance of these highways

History of Access ManagementHistory of Access Management

1944 - National System of Interstate and Defense Highways

1955 - A Ten Year National Highway Program

1960 - AASHO published “An Informational Guide For Preparing Private Driveway Regulations for Major Highways”

1971 - NCHRP Report 121, Protection of Highway Utility

Modern Access ManagementModern Access Management

1981 – Colorado adopts system-wide regulatory code of standards and procedures was adopted.

1994 – TRB Establishes the Access Management Committee

1996 - Transportation Research Circular # 456, “Driveway and Street Intersection Spacing”

1999 - NCHRP Report 420, “Impacts of Access Management Techniques”

2003 - 1st Edition of the Access Management Manual

Since 2003 – AM ResearchSince 2003 – AM Research

Completed Research– NCHRP Report 546: Incorporating Safety into Long-Range

Transportation Planning– NCHRP Report 524: Safety of U-turns at Unsignalized Median

Openings– NCHRP Report 548: A Guidebook for Including Access

Management in Transportation Planning– NCHRP Report 659: Geometric Design of Driveways– NCHRP Synthesis 304: Driveway Regulation Practices– NCHRP Synthesis 332: Access Location on Crossroads in the

Vicinity of Interchanges– NCHRP Synthesis 337: Cooperative Agreements for Corridor

Management – NCHRP Synthesis 351: Access Rights– NCHRP Synthesis 404: State of the Practice in Highway Access

Management

Since 2003 – AM Research (cont.)Since 2003 – AM Research (cont.)

Ongoing Research– NCHRP Project 03-72: Lane Widths, Channelized Right-Turns

and Right-Turn Deceleration Lanes in Urban and Suburban Areas

– NCHRP Project 03-88: Guidelines for Ramp and Interchange Spacing

– NCHRP Project 03-89: Design Guidance for Channelized Right-Turn Lanes

– NCHRP Project 03-91: Left-Turn Accommodations at Unsignalized Intersections

– NCHRP Project 03-98: Guidelines on the Use of Auxiliary Through Lanes at Signalized Intersections

– NCHRP Project 03-99: Development and Application of Access Management Guidelines

– NCHRP Project 15-43: 2nd Edition of the Access Management Manual

Current Industry Issue with AM ResearchCurrent Industry Issue with AM Research

“raised medians reduce crashes by over 40 percent in urban areas and over 60 percent in rural areas”

“corridors with access control improvements experienced an 18 percent increase in property values after construction”

“installation of roundabouts reduced crashes between 18 and 29 percent and injury crashes between 63 and 88 percent”

Current Industry Issue with AM ResearchCurrent Industry Issue with AM Research

“raised medians reduce crashes by over 40 percent in urban areas and over 60 percent in rural areas”– NCHRP Report 420 - Impacts of Access Management

Techniques

“corridors with access control improvements experienced an 18 percent increase in property values after construction”– Raised Medians: Data Analysis on Additional Case Studies,

Research Report 3904-3

“installation of roundabouts reduced crashes between 18 and 29 percent and injury crashes between 63 and 88 percent”– Accident Reduction with Roundabouts, Paper presented at the

69th Annual ITE Meeting, Las Vegas, Nevada.

Role of AMAG in Access ManagementRole of AMAG in Access Management

Access Management Manual (AMM)Access Management Manual (AMM)

2nd Edition AMM– Estimated Completion - June 2013– Incorporates All AM Research Completed Since 1999

www.AccessManagement.info– Managed by the TRB Access Management Committee

AMAG Project Background and ScheduleAMAG Project Background and Schedule

Notice to Proceed – June 2009Project Team– Oregon State University– Kittelson & Associates, Inc.– University of Arkansas– Huntington Traffic Solutions

Estimate Completion Date – June 2012

AMAG OrganizationAMAG Organization

Introduction1)Access Management Concepts2)Program Development and Implementation3)Public Roadway Corridor Design4)Site Design5)Other Access Management Considerations6)Public Involvement7)Legal Considerations

Guideline FormatGuideline Format

28 Modules in initial guideModule Format– Definition– Purpose– Guidance for Users: Needs and Issues to Consider– Application Issues– Vehicle Perspective– Other User Perspectives– Evaluation Techniques– Gaps in Knowledge– References– Interactive Elements– Case Studies

AMAG Web PlatformAMAG Web Platform

The project is being designed to provide an online platform of Access Management Application Guidelines that:Allows guidelines and underlying research to be distributed

broadlyMaintains plug-and-play modules by topic that allows NCHRP

and TRB to update it as additional research becomes availableProvides distribution vehicle to the user community for future

researchCreates a resource site where users can access forms and

spreadsheetsAllows Direct link to AM Committee website (

www.accessmanagement.info) and being referenced by future versions of the Access Management Manual

Example Online ModuleExample Online Module

Ultimate Research ObjectiveUltimate Research Objective

Thank you Thank you

Marc Butorac, PE, PTOEmbutorac@kittelson.com