Access Management Program
Download
1 / 14

June 13, 2007 - PowerPoint PPT Presentation


  • 122 Views
  • Uploaded on

Access Management Program. June 13, 2007. 4.1. 2.8. 2.1. 1.7. 1.3. 1. Schedule. NHCRP Report 420 - Impacts of Access Management Techniques. Composite Crash Rate Indices. 5. 4. 3. Crash Rate Index. 2. 1. 0. 10. 20. 30. 40. 50. 60. Access Points per Mile.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' June 13, 2007' - enrico


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Nhcrp report 420 impacts of access management techniques

4.1

2.8

2.1

1.7

1.3

1

Schedule

NHCRP Report 420 - Impacts of Access Management Techniques

Composite Crash Rate Indices

5

4

3

Crash Rate Index

2

1

0

10

20

30

40

50

60

Access Points per Mile

Source: NHCRP Report 420, TRB 1999


Design team responsibilities
Design Team Responsibilities

  • Create a consensus regarding design elements for the access management program.

  • Ensure that Districts have input

  • Provide recommendations to the State Engineer

-3-


The roadway design guide and other adot guides and policies are not regulatory rdg permit rules

Internal Policy

No prescribed legal standards

ADOT Staff

ADOT consultants

No 3rd Parties, No appeals

ADOT final say

Not enforceable

Arizona Administrative Code

Meets prescribed legal standards

3rd Parties (public)

The weight of Law

Subject to legal review

Enforceable

May be appealed

The Roadway Design Guide and other ADOT guides and policies are not regulatoryRDGPermit Rules


Rdg permit rule

Roadway design Guidance (mostly)

Relies on Professional Engineering judgment

No enforcement needed

Entirely ADOT discretion.

Little judgment

Little flexibility

Clear, concise

Enforceable

Applies only to access decisions

RDG - Permit Rule


What are the legal issues to ensure design strength and permit enforcement
What are the legal issues to ensure design strength and permit enforcement ?

  • Access permitting regulates property rights

  • Permit requirements must be regulatory

  • Only by weight of law can ADOT have enforcement powers

  • ADOT must meet established legal standards for Rule format, language, clarity.

  • Rule must be understandable to those whom do business with ADOT (the public)


Access Classification System permit enforcement ?

  • Sets the system hierarchy

  • The access classification determines the

    answer to the questions:

    - May I have access to the state highway?

    - Where should the access be located?

    - What type of access may I have?

    - What are the major design elements?


Access category assignment status
Access Category Assignment Status permit enforcement ?


Access Category Design Issues permit enforcement ?

  • Standards for granting or denying access requests.

  • Spacing of intersections & signals.

  • Volume warrants for turn lanes



Rule Level Access Design Elements permit enforcement ?

  • If the request qualifies for highway access, what will ADOT require?

  • Which design elements must be in Regulation to provide enforcement “teeth”

  • Which permit elements are expensive

  • What can be left in the various ADOT ‘internal’ policies and guides?


Rule Level Access Design Elements permit enforcement ?

  • Access Spacing (location)

  • Sight distance requirements

  • Turn Lane design (decel, Accel & storage lengths)

  • Driveway Geometrics

  • Medians (type, when open)

  • Legal Enforcement of design permit terms and condition


Rule level access design elements
Rule Level Access Design Elements permit enforcement ?

  • Selection of the Design Vehicle

  • Drainage (retention, MS4, system design)

  • Cattle guards, gates & location

  • Emergency access only.

  • Earthwork (side slopes, specs, erosion)

  • Design Variances

    • Exception and Waiver Procedures


ad