Transcript Slide 1

SR 109
Access Management Study
Corridor Management Committee Kickoff Meeting
June 9, 2014
Agenda

Welcome and Introductions
 What is Access Management? And, why is It
Important?

Scope of Services for SR 109 project

Project Schedule

Next Steps
What is Access Management?
Why is it Important?
 Access Management is the careful consideration
of the location, type and design of vehicular
access points to a roadway.
 It is the recognition that vehicular maneuvers and
volumes at each access point will have specific
and accumulative consequences to the flow and
safety of the street for all user types.
When Access Principles are Applied
to a Specific Corridor
 Crashes are
reduced by 30 to
60 percent
 Capacity is
increased by 20
to 40 percent
Demosthenes
Business Benefits
 Commercial businesses depend on efficient
transportation services.
 Retail market areas are determined in part by travel
time.
 Non-retail business - manufacturing, distribution,
service providers and offices are best served by safe
and efficient roadways for employees, and
movement of goods and services.
Good for the Community
 Better travel time to work, recreation, and shopping
 Safer for families – fewer major crashes
 Tax dollar investment lasts longer
When Access is Not Managed

Increased vehicular crash rates

Decreased pedestrian and cyclist safety

Reduced roadway efficiency

Encourage strip development

Increased travel time for everyone

Decreased market area for retail and employment.
Roadways are the Most Dangerous
Public Facilities on the Face of the
Earth

Each day about 92
people die (2012)

Over 15,000 Crashes
each day

Over 4,100 Injuries
each day
Which means: one person of every 90 born
today will die violently in a motor vehicle crash.
70 out of every 100 will be injured at some
point in their lives.
AASHTO Strategic Highway Safety Plan
We Know that
 The most likely cause of the death of a
child is a traffic accident.
 The most likely cause of accidental
death of an adult is a traffic accident
AASHTO Strategic Highway Safety Plan
We Know that at
Intersections
National Intersection Crash Statistics

27.3 % of all reported
crashes

Almost 25% of all traffic
fatalities

Almost 50% of all traffic
injuries

About 55% of all crashes
are related to access

Traffic signals increase
crash frequency
Business Market Area Shrinks as Arterial Speed
is Reduced by Congestion and More Traffic
Signals.
Source: Florida DOT
Assuming a 20 minute trip, dropping from average speed of
35 mph to 25 means over 50% reduction in market area.
Estimated Savings in Travel Time & Delay:
1/2 v. 1/4 Signals + Side Friction in 5 Miles
Access
Controlled
Segment
Unrestricted
Segment
Percent
Change
Travel
Speed
MPH
Total Travel
Time
Veh-H/H
Total Delay
Time
Veh-H/H
22
542
275
13
942
675
- 42%
- 59%
There is No Such
Thing as a Safe
Access.
 As the number of access
points per mile increase,
so does the frequency of
crashes.
 And the rate also
increases.
 40 driveways per mile will
increase crashes by 60%
compared to 20 per mile.
NCHRP 420
 Each access = 4%
Every Access Point is Fundamentally a
Safety Problem

Issuing an access permit is a decision to
diminish public safety and roadway function.
Photo by Dr. J. L. Gattis, U of Arkansas
Adopted from Elizabeth Alicandri and the Minnesota DOT
2-Lane Crossing 2-Lane
 The center
box is where
serious
injuries are
most likely
 32 total
conflicts
Designing for Safety is About Limiting and
Managing Vehicular Conflicts

If you reduce the Rate at which a motorist encounters
conflicts you will reduce the Rate of crashes.

If you reduce the speed differential of crashes there will
be fewer injuries.
Goal of Access Management

Separate turning vehicles from through traffic
 Provide left and right turn lanes
Goal of Access Management

Limit access conflicts and severe types
Source: Florida DOT
Decreasing
crash rates
by adding
medians
AM on Arterials is All about Local
Street Networks

Local safe streets, connecting friends, safe routes to
schools, sidewalks, bicycle routes

No homes with direct driveways to an arterial, or even a
collector
Open 4 leg intersection
 22 crossing
conflicts “kill
zone”
 8 merging
 8 diverging
Graphic from Teachamerica and Florida DOT
Roundabouts have No Crossing
Conflicts



24 angle conflicts for 2 lane RBTs
8 angle conflicts for single lane RBTs
The “Kill Zone” crossing conflicts are gone
Goal of Access Management

Safer residential access
Goal of Access Management

Keep private access off arterials
Demosthenes
Hierarchical Network is an Access
Management Strategy
Land use planning and project
design decisions do establish long
term crash rates

Planning decisions determine access need,
location, frequency, type and traffic volume thereby establishing roadway conflict rates.
Study Area
Study Goals and Objectives

Develop an Access Management Plan that
establishes standards and policies for the
location, spacing, design and operation of:
 Driveways




Street connections
Median openings
Traffic signals
Interchanges
Study Outcomes
Access
Management
Plan
Corridor Vision
Access
Categories
Recommended
Improvements
Major Tasks and Task Leaders
Nashville Area MPO
Michael Skipper
Executive Director
Principal in Charge
Marshall Elizer, PE, PTOE
GS&P
Project Steering Committee
TDOT
TDEC
Nashville MPO
Sumner County
Wilson County
City of Gallatin
City of Lebanon
City of Portland
Project Manager
John Houghton, AICP
GS&P
Task 2
Public Outreach, Stakeholder,
and Media Outreach
Task Leader
Lindsay Puckett, AICP
GS&P
Kevin Tilbury, AICP
Cindy Frear
GS&P
Stephen Stansbery, AICP
KHA
Sharon Younger, PhD
Younger Associates
Task 3
Technical Review and Analysis
of Historic, Existing and Future
Conditions
Task Leader
Kevin Tilbury, AICP
GS&P
Nithin Gomez, PE
Andrew Gaskins
GS&P
Allison Fluitt, PE, AICP
KHA
Tasks 4 & 5
Existing Guidelines and
Practices & Access
Management Resource Kit
Task Leader
John Houghton, AICP
GS&P
Phil Demosthenes
PD
Diane Regensburg, PE
Patrick Leap, PE
Andrew Gaskins
GS&P
David Coode, AICP
Christopher Rhodes, PE
KHA
Tasks 6
Corridor Specific Access
Management Plan
Task Leader
Jay Bockisch, PE, PTOE
GS&P
Patrick Leap, PE
Andrew Gaskins
GS&P
Phil Demosthenes
PD
Christopher Rhodes, PE
Stephen Stansbery, AICP
Timothy White, PE, PTOE
KHA
Task 7
Final Documentation
Task Leader
Lindsay Puckett, AICP
GS&P
Patrick Leap, PE
Andrew Gaskins, AICP
GS&P
Phil Demosthenes
PD
Allison Fluitt, PE, AICP
Stephen Stansbery, AICP
KHA
Technical Approach
Project
Management
Plan
Public,
Stakeholder,
and Media
Outreach Plan
Final
Documentation
ACCESS
MANAGEMENT
PLAN
Historical,
Existing, and
Future
Conditions
Access
Management
Resource Kit
Existing
Access
Management
Guidelines and
Practices
Project Work Flow
Phase One - Challenges & Opportunities
Project
Management
Plan
Public
Involvement Plan
Historical, Existing
& Future
Conditions
Existing
Guidelines &
Practices
Draft Resource Kit
Public Meetings:
First Round
Phase Two - Alternatives
Final Resource Kit
Draft Access Management Plan
Public Meetings: Second Round
Phase Three - Final Plan
Final Access Management Plan
Final Documentation
Public, Stakeholder & Media
Outreach Plan
SR 109 Corridor
Management
Committee
News Media
Project Website
& Social Media
Public Meetings
Elected Officials
& Stakeholder
Group Meetings
Setting the Stage
Historical, Existing,
& Future Conditions
Access
Management
Resource Kit
Existing Access
Management
Guidelines &
Practices
Setting the Stage

What are the opportunities and challenges in
the corridor?
Goal
Performance Measure
Tool
Benefit
Improve permitting process
Average time
Interagency protocol
% Processing time reduction
Improve safety
Driveway density
Driveway consolidation
% Crash reduction
Reduce motorist delay
Intersection delay
Optimize signal spacing
Peak hour level-of-service
Support economic growth
Average speed
Raised median
% Trade area increase
Setting the Stage

How is access managed in the corridor today?
Setting the Stage

What strategies and tools can we use to improve
access management in the corridor?
Access Management Plan

Shared Vision for
the Corridor

Access Categories

Recommended
Improvements
Task
June
July
Aug
2014
Sept
Oct
Nov
Dec
Task 1: Project Ma na gement Pl a n
Task 2: Publ i c, Stakehol der, a nd Medi a
Outrea ch Pl a n
0
0
Task 3: Techni ca l Revi ew & Ana l ys i s of
Hi s tori c, Exi s ting a nd Future
Condi tions
Task 4: Document & As s es s Exi s ting
Acces s Ma na gement Gui del i nes a nd
Pra ctices
Task 5: Devel op Acces s Ma na gement
Res ource Ki t
Task 6: Devel op Corri dor Speci fi c
Acces s Ma na gement Pl a n
Task 7: Prepa re Fi na l Documentation &
El ectroni c Fi l es
Project Steering Committee Meetings
Major Deliverables
0 Public Meetings
Jan
Feb
2015
March
April
May
Next 90 Days

Develop and submit Project Management Plan
(Task 1) & Public Involvement Plan (Task 2)

Initiate Review & Analysis of Existing Conditions
and Trends (Task 3)

Initiate Documentation & Assessment of Existing
Access Management Practices (Task 4)

Initiate Development of Access Management
Resource Kit (Task 5)

Convene Project Steering Committee Meeting #2