Resources

Design Exceptions and Deviations from Standards

  • Posted on: Sun, 10/13/2013 - 22:17
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Traffic Operational Analyses (TOA)

  • A TOA will be required for all development projects that are expected to generate 200 or more vehicle trips per day and for which a Traffic Impact Study (TIS) was not completed.

  • A TOA will be required for any development project for which changes in land use are intended after the completion of a TIS or TOA, if enough additional vehicle trips are being generated beyond those accounted for in the TIS or TOA, as determined by the County Coordinator.

Community Outreach in Access Management Planning

  • Posted on: Sun, 10/13/2013 - 22:17
  • By: shroedermay
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Why Outreach Matters

  • Allows you to…

  • Get essential input

  • Get in front of the issues

  • Deal effectively with potential opponents

  • Create opportunities for

    • education

    • and venting!

 

Lessons learned…

  • Define end game- outreach process objectives

  • Know your stakeholders!

  • Tailor the approach

  • Draft a Public Involvement Plan (PIP) before project start-up

Modifications for Private Access Approaches on Limited Access Facilities

  • Posted on: Sun, 10/13/2013 - 22:16
  • By: shroedermay
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Proposed Changes & Improvements

  • Use the county assessed value as the baseline value for calculating the difference vs. going through a costly and time consuming appraisal process.

  • Charge only a percentage of the determined value for changes to residential (less than 10 dwellings) and farm access.

  • Charge full amount of determined value for commercial, retail, etc…

  • Charge an administrative fee for processing requests.

Access Management Issues and Techniques at Continuous Flow Intersections (CFI’s)

  • Posted on: Sun, 10/13/2013 - 22:14
  • By: shroedermay
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Outline

  • What is a CFI?

  • Why consider a CFI?

  • Access Management Issues at a CFI

  • Potential Access Solutions

  • Questions Comments

 

Potential Access Solutions

  • Inter-parcel Access

  • Service Roads

  • Partial Median Openings

  • Right-In Only Driveways

  • Right In-Right Out Driveway on CFI Leg

  • U Turns

  • Purchase Access Rights

  • Relocate/Add Driveway

ACCESS MANAGEMENT PLANNING IN MICHIGAN

  • Posted on: Sun, 10/13/2013 - 22:13
  • By: shroedermay
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No Presentation

What we found

  • MDOT is typically getting what they pay for

  • Studies/plan preparations take 12 – 18 months

  • More than 35 studies completed

  • Cost range: $25,000 - $100,000

  • Plan/ordinance adoption rates and reasons vary

  • Numerous specific recommendations implemented

  • MDOT/local government cooperation and coordination typically improves after studies

  • Access committees often form in perpetuity

 

Canton Township Access Management Strategies

  • Posted on: Sun, 10/13/2013 - 22:12
  • By: shroedermay
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Approach/Methodology

  • Educate the Businesses

    • What is Access Management and how can it help?

    • Public Meeting

    • One-on-One meetings with business owners

  • Identify opportunities and obstacles

  • Identify priorities

  • Develop a strategy for implementation and ongoing coordination

Economic Effects of Access Management

  • Posted on: Sun, 10/13/2013 - 22:11
  • By: shroedermay
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Objective

  • Determine the economic effects of access management techniques on businesses adjacent to multilane highways.

In Favor of a Raised Median to Increase Safety?

  • Tendency is definitely negative reaction by businesses.

  • However, after median installation opinions appear to improve!

Ranking of Customer Considerations

  • App. 60% ranked “Accessibility” 4th, 5th, or 6th!

Access Management Solutions with Roundabouts

  • Posted on: Sun, 10/13/2013 - 22:10
  • By: shroedermay
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Well-designed Modern Roundabouts enhance the achievement of Access Management principles

  • Maintain Integrity of Arterials

  • Balance Mobility and Access

  • Improve Safety

  • Reduce
    Congestion

  • Extend the life of
    Infrastructure

 

 

Roundabout Operational & Safety Characteristics:

  • Driveway and intersection spacing versatility

  • Geometric flexibility (properly designed)

  • Less queuing

Access Management Solutions with Roundabouts

  • Posted on: Sun, 10/13/2013 - 22:07
  • By: shroedermay
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Well-designed Modern Roundabouts enhance the achievement of Access Management principles

  • Maintain Integrity of Arterials

  • Balance Mobility and Access

  • Improve Safety

  • Reduce
    Congestion

  • Extend the life of
    Infrastructure

 

 

Roundabout Operational & Safety Characteristics:

  • Driveway and intersection spacing versatility

  • Geometric flexibility (properly designed)

  • Less queuing

Access Management Considerations at Four Innovative Intersections

  • Posted on: Sun, 10/13/2013 - 22:06
  • By: shroedermay
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Topics

  • New Jersey Jughandle Intersection (NJJI)

  • Displaced Left Turn Intersection (DLF)

  • Median U-Turn Intersection (MUT)

  • Restricted Crossing U-Turn Intersection (RCUT)

Summary

  • All unconventional intersection designs are conceived to take advantage of the local traffic pattern

  • Their main design objectives are to improve LOS of critical movements, maintain or improve overall safety at main intersection, and generate tolerable delays to non-critical movements

Arizona & New Mexico Access Program Developments

  • Posted on: Sun, 10/13/2013 - 22:04
  • By: shroedermay
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New Mexico’s Goals (2009-10)

  • Update and improve current manual, regulations and internal policies.

  • Provide training

  • Budgeted for phase 1

Switch from Guide to Rules

  • Mostly procedures w/o criteria

  • All design issues pointed to Green Book

  • Not effective program

  • Not preserving function or safety

  • Lacked ability to address accumulative impacts

  • Little criteria to deny a request

 

Started with

The Convergence of Statewide Policy, Local Initiatives, and Private Development in Virginia

  • Posted on: Tue, 10/08/2013 - 21:45
  • By: shroedermay
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What is Virginia trying to reduce/remove?

  • traffic congestion
  • dangerous streets & intersections
  • new construction
  • widening projects

Takeaway #1

  • Not all arterials are created equal
    • Long distance trips with few access points
    • Local traffic with many access points
  • Design speed must be appropriate for the context
  • Road should change with the land use

Takeaway #2

Using the HSM 2010 to Predict Intersection Crashes in Corvallis, OR

  • Posted on: Tue, 10/08/2013 - 21:43
  • By: shroedermay
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Outline:

  • Introduction
  • Crash Analysis
  • HSM 2010 Predictive Method
  • Case Study
  • Discussion

Site-specific EB Method

  • Combines observed crash frequency with the predictive model estimate
  • Reduces effects of regression-to-the-mean
  • Both SPF and Crash data must be available

Sample Applications of the HSM to Access Management

  • Posted on: Tue, 10/08/2013 - 21:42
  • By: shroedermay
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II. HSM for Urban Suburban Multilane Streets

  • Access Density is a known effect
  • Driveways are grouped by type:
    • Commercial
    • Institutional
    • Residential
    • Other
  • Driveways are either “minor” or “major” if have 50 or more parking spaces

“Lessons Learned”

  • The Highway Safety Manual is “Functionally Based”
  • The 4D model works acceptably to model 6 lane arterial street

 

Grassroots Implementation of Access Management: A Case Study from Peoria, Arizona

  • Posted on: Tue, 10/08/2013 - 17:06
  • By: shroedermay
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The First Steps

  • Access Management Champion
  • Get buy-in from internal staff and management
  • Secure funding for activities (not always required)
  • Outreach
  • Presentations
  • Websites
  • One-on-one Interactions

 

Next Steps (Peoria)

ANALYSIS OF ACCESS MANAGEMENT IMPLEMENTATION: A SUCCESS STORY

  • Posted on: Tue, 10/08/2013 - 15:45
  • By: shroedermay
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Case Studies

MY QUESTION:

  • Is there a reduction in accidents after access management is implemented?
  • If yes, is it statistically significant?

CONCLUSIONS

  • Access Management has a significant impact on accident severity and societal costs.
  • Access Management results in a significant reduction during PM peak travel
  • This knowledge can be helpful when programming future projects.

Access Management: A Developer’s Perspective

  • Posted on: Tue, 10/08/2013 - 15:43
  • By: shroedermay
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Three Examples from a Developer’s Perspective

  • A 15 acre +/- development that was ultimately denied as they could not secure reasonable access to accommodate the site traffic.
  • A redevelopment project that was ultimately approved though unable to meet any of the access management standards.
  • An approval to allow additional access to support an existing development and improve on-site circulation concerns

Success

Access Management: A City’s Perspective

  • Posted on: Tue, 10/08/2013 - 15:41
  • By: shroedermay
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Themes

  • Cities believe in the importance and value of access management
  • Access management has to be undertaken hand-in-hand with other municipal considerations
  • Access management is one of a handful of tools that should be used for the betterment of the community

Municipal Realities

  • Cities are a study in conflicting goals and compromises
  • Rarely does one goal trump all others . . . even the safety goal!
  • Politics is a daily issue
  • Balancing needs is key to success

 

Conclusions

NCHRP Synthesis Report 404: State of the Practice in Highway Access Management

  • Posted on: Tue, 10/08/2013 - 15:40
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Overview of Synthesis Survey

  • All 50 state DOTs contacted – Targeted key individuals with access management responsibilities at each state DOT
  • 69-question survey was administered online:
  • Email distribution to DOT contacts in all 50 states
  • ITE Traffic Engineering Council
  • ITE Transportation Planning Council
  • National Association of County Engineers
  • Association of Metropolitan Planning Organizations

Profiles of Contemporary Practices

LADOTD’s Approach to Access Management

  • Posted on: Tue, 10/08/2013 - 15:38
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First Steps

  • Updated the existing “median policy”
    • no 5 lanes
    • median opening spacing
    • median opening types
  • Created “signal spacing and warrant policy”
    • established ½ mile spacing
  • Created “roundabout policy”
  • Policies were signed by the Chief Engineer
    • after 2 years are now finally being “tested”

Future

Access Retrofit of a Corridor And Other Masochistic Behaviors

  • Posted on: Tue, 10/08/2013 - 15:36
  • By: shroedermay
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Market Characteristics

  • How much development can be realistically absorbed in this area?
  • How will market area be sustained?
  • What message will be crafted for key stakeholders?

Measures of Effectiveness

  • Safety
  • Market Area (Sustainability)
  • Walkability
  • Natural Environment

Implementation and Integration

  • Public Involvement/Information
  • Access Controls
  • Land Use Controls
  • Formative Measures/Revisiting

Design Considerations of a Corridor Retrofit

Safety Effects of Median Modification Using Quick Kurb (QK)

  • Posted on: Tue, 10/08/2013 - 15:34
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Conclusions & Recommendations

  • Effective Temporary Median Treatment
  • Construction: Shorter Time and Less Cost
  • Safety Effects
  • Reduction on Left-Turn Related Crashes
  • Total Crashes: Reduced for most of applications except full median closure from bi-directional median opening
  • Benefit/Cost Ratio
  • Bi-directional Channelization: 8-12
  • One-directional Channelization: 3-5

 

Limitations & Next Step

Safety and Economic Impacts of Converting Frontage Roads from Two-way to One-way Operation: Preliminary Findings

  • Posted on: Tue, 10/08/2013 - 15:27
  • By: shroedermay
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Project Objectives

  • Develop accurate information to communicate types of:
  • Safety impacts
  • Accident Modification Factors
  • Economic impacts

 

 

Background

  • Frontage roads
    • Start two-way (in rural)
  • Conversion “pressures”
    • Land development
    • Increased traffic volumes, signal operation

Survey Recommendations

Highway 72 Corridor Study

  • Posted on: Tue, 10/08/2013 - 15:05
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What are the big issues?

  • It’s the economy!
  • Access to US 72
  • New connections
  • Safety – truck conflicts
  • Growth and traffic congestion
  • Tourism/visitors

 

Tools for implementation

  • Zoning
  • Subdivision regulations (major street plan)
  • Policy decisions
    • ALDOT – signals, median openings
    • Local agencies – urban services
  • Master Plans and Corridor Management Agreements
    • Putting it all together

Slide Titles

Safety and Economic Impacts of Converting Frontage Roads from Two-way to One-way Operation: Preliminary Findings

  • Posted on: Mon, 09/23/2013 - 21:10
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Project Objectives

  • Develop accurate information to communicate types of:

  • Safety impacts

  • Accident Modification Factors

  • Economic impacts

 

 

Background

  • Frontage roads

    • Start two-way (in rural)

  • Conversion “pressures”

    • Land development

    • Increased traffic volumes, signal operation

Survey Recommendations

  • Complete conversions as quickly as possible

Highway 72 Corridor Study

  • Posted on: Mon, 09/23/2013 - 21:07
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What are the big issues?

  • It’s the economy!

  • Access to US 72

  • New connections

  • Safety – truck conflicts

  • Growth and traffic congestion

  • Tourism/visitors

 

Tools for implementation

  • Zoning

  • Subdivision regulations (major street plan)

  • Policy decisions

    • ALDOT – signals, median openings

    • Local agencies – urban services

Safety Impacts of Access Management: Two Case Studies

  • Posted on: Mon, 09/23/2013 - 21:04
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Presentation Outline

  • Case Study 1-Nebraska Avenue Lane Diet

    • Before: 4-lane undivided

    • After: 2-lane divided with TWLTL

  • Case Study 2-Hillsborough Avenue Median Installation

    • Before: 6-lane with TWLTL

    • After: 6-lane with raised medians

 

Case Study 1: Discussion

  • Significant Safety Improvement

  • Improvement of all Analyzed Crash Types

  • From Worse to Better than SW Average

Safety Impacts of Access Management: Two Case Studies

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Peter Hsu, P.E.

Florida Department of Transportation

District 7

 

W. T. Bowman, P.E

Tindale-Oliver & Associates, Inc.

Tampa, FL

Presentation Outline

  • Case Study 1-Nebraska Avenue Lane Diet
    • Before:  4-lane undivided
    • After:  2-lane divided with TWLTL
  • Case Study 2-Hillsborough Avenue Median Installation
    • Before:  6-lane with TWLTL
    • After:  6-lane with raised medians

Case Study 1: Discussion

About

About the TRB AHB70 Access Management Committee

Under the leadership of our new chair, Marc Butorac, the TRB committee is simplifying our subcomittee structure to help meet current needs. This website has information about the 3 committees:

  • Outreach
  • Conference
  • Research

The second edition of the TRB Access Management Manual is undergoing editorial review, and should be published in 2014.

 

We encourage you to get involved in the following ways:

Access Management - The Musical

  • Posted on: Fri, 08/30/2013 - 23:50
  • By: fbroen
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A fun, musical ending to the 2012 Access Management Conference.

Would you like to hear those songs again? put a note in the comments.

Here are the lyrics for Access Management – the Musical

I want to get thru (To the tune of Hello Mary Lou)

Passed me by one summer day,
Flashed those big headlights my way
And then I sat in one big traffic jam

I just want to get around
Not be stuck in this downtown
Oh no I hear a screech, slam bam and wham.

Public Involvement Success in Amarillo

  • Posted on: Fri, 08/30/2013 - 23:43
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Texas DOT

Amarillo Comprehensive Plan 2010

  • Amarillo Comprehensive Plan
  • “Essential need to safeguard the through traffic function—and capacity and safety—of key arterial and highway corridors”
  • Amarillo Downtown Revitalization
  • Need for Viable Truck Relief Route for Amarillo

Lessons Learned

  • Listen
  • Ground Hog Day
  • Be Pro-Active

Avoiding the Bypass Blues

  • Posted on: Fri, 08/30/2013 - 23:30
  • By: fbroen
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Avoiding the Bypass Blues: Managing Impacts on Small- and Medium-Sized Communities
CUTR

Impacts of Bypass Highways on Small- and Medium-Size Communities

Florida DOT Project (2011)

 

Objective:  To gain insights on and make recommendations regarding how to study the possible indirect impacts of new bypass highways on land use and other considerations in Florida

Access Management Considerations for High-Capacity Multi-lane Roundabouts

  • Posted on: Fri, 08/30/2013 - 23:23
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Case Studies

Roundabouts Enhance the Achievement of Access Management Principles

  • Maintain Integrity of Arterials
  • Balance Mobility and Access
  • Improve Safety
  • Reduce Congestion
  • Extend the life of Infrastructure
  •  

Roundabout Operational Characteristics Allow for:

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