OUTLINE
INTRODUCTION
APPLICATIONS
OBJECTIVES
METHODOLOGY
DATA COLLECTION
DATA ANALYSIS
STATISTICAL TESTS
RECOMMENDATIONS AND CONCLUSIONS
OBJECTIVES
1. To conduct a thorough literature review to study the existing methods of computing access density
2. To apply different computational methods of access density and studying their differences
Common Reasons to Consider Exceptions
Impacts to the natural environment
Social or right-of-way impacts
Preservation of historic or cultural resources
Sensitivity to context or accommodating community values
Construction or right-of-way costs
Risk Management Characteristics
Explicitly addresses uncertainty
Based on the best available information
Part of the decision-making process
The Values We Used To Craft A Successful Review Process
Process should be consistent
Need to involve a multi-disciplinary management level team in each district
Communication between all parties is critical throughout the process
Florida DOT staff will use creativity and flexibility to resolve issues
Some Closing Thoughts
Look for solutions within your organization
We found a model process in one of our districts.
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.
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
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 Spacing and Corner Clearance
Corner Clearance is the distance provided between a roadway intersection and the nearest access connection
Corner Clearance is a special case of access connection spacing
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
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
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
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!
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
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
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
New Mexicos 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
What is Virginia trying to reduce/remove?
Takeaway #1
Takeaway #2
Outline:
Site-specific EB Method
II. HSM for Urban Suburban Multilane Streets
Lessons Learned
Chapter 12 Predictive Method for Urban and Suburban Arterials
Communication
NCHRP 15-35, Geometric Design of Driveways
Many years since comprehensive national guidelines for the geometric design of driveways
Issues to Address
Case Studies
Mitigation in Florida
The First Steps
Next Steps (Peoria)
Case Studies
MY QUESTION:
CONCLUSIONS
Three Examples from a Developers Perspective
Success
Themes
Municipal Realities
Conclusions
Overview of Synthesis Survey
Profiles of Contemporary Practices
First Steps
Future
Market Characteristics
Measures of Effectiveness
Implementation and Integration
Design Considerations of a Corridor Retrofit
Conclusions & Recommendations
Limitations & Next Step
Outline
Conclusions & Recommendations
Project Objectives
Background
Survey Recommendations
What are the big issues?
Tools for implementation
Slide Titles
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
What are the big issues?
Its 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
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
Workshop 1
The Use and Abuse of Crash Data in Roadway Access Management Presentation AM08W1 David Plazak
Opening Session Access Management: Past, Present, and Future Presentation Paper
AM0801 Kristine Williams
Frequently Asked Questions
TRB's Access Management Manual provides technical information on access management techniques, together with information on how access management programs can be effectively developed and administered.
You are going to put me out of business!
This is by far the most common and passionate complaint of small business owners who pour their life saving into their business. The following points could be used to try and calm their fears:
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: Discussion
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:
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:
David W. Gwynn, Jr., P.E.
TEI Engineers & Planners
Public Information Meetings for Access Management (Top Ten Complaints)
There were several objectives of the project:
List of Presentations from Natchez Mississippi
OCT 10-13, 2010 NATCHEZ, MISSISSIPPI
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.
Texas DOT
Amarillo Comprehensive Plan 2010
Lessons Learned
Using Visualization Tool to Determine Roundabout Conflicts: Surrogate Safety Assessment Model (SSAM)
North Carolina DOT
In Summary
Frank demonstrated the Corridor Visualization Explorer - a new tool developed to easily show the effects of access management decisions on a corridor.
Brigham Young University
Outline
Conclusions
