1 implementation of transportation management plans (tmps) presented by tracy scriba federal highway...
TRANSCRIPT
1
Implementation of Transportation Management Plans (TMPs)
Presented by Tracy Scriba
Federal Highway Administration
AASHTO Design Meeting
July 15, 2008
2
Agenda Work Zone Safety and Mobility Rule TMP Basics What Role do Designers Play in Developing
TMPs? State of the Practice for TMPs TMP Development Resources
3
Work Zone Safety and Mobility Rule Published Sept 9, 2004 in Federal Register
(69 FR 54562) Updates and Renames 23 CFR 630 Subpart J Effective Date of Oct 12, 2007 Establishes requirements and guidelines for
consideration and management of WZ impacts Requires development and implementation of
TMPs for all Federal Aid highway projects (among other things)
4
TMP Basics: What is a TMP? A document that lays out a
set of coordinated transportation management strategies and describes how they will be used to manage the work zone impacts of a road project
5
TMP Basics: Why TMPs? Traffic management efforts beyond temporary
traffic control (TTC) plans are needed to deal with the increasing traffic volumes using the same roads on which agencies need to perform maintenance and rehabilitation
Has affects on: Safety Mobility Constructability
TMPs = more comprehensive approach to managing WZ impacts
6
Basics: TMP Components A TMP may be a single document, or
several documents/plans compiled together
Must always include a Temporary Traffic Control Plan (TTC)
For significant projects, TMPs must also contain a traffic operations (TO) component and a public information and outreach (PI) component
Simply stated, a significant project is a project that the agency expects will cause a relatively high level of disruption.
7
Basics: When is a TMP Developed?TMP development should begin during systems
planning and progress through design Conducting TMP analyses early in project development
helps ensure: Systems planning and preliminary engineering: TMP
development and implementation costs are included in the project budget
Design: Agencies consider WZ impacts in evaluation and selection of design alternatives For some projects it may be possible to choose a design alternative that alleviates many WZ impacts
Final TMP development occurs during DESIGN
8
TMP Development Process (from Developing and Implementing TMPs for
Work Zones)
9
What Role do Designers Play in Developing TMPs?
10
During Design… Final assessment of WZ impacts is done,
which should affect the choice of: Best construction/staging option(s) Most suitable design and contracting approach Most appropriate WZ traffic management
strategies
11
TMP Strategies to Manage WZ Impacts
Designers are encouraged to consider these strategies early on in the process for all projects, even if they aren’t included in the TMP
Temporary Traffic Control (TTC) Strategies
Public Information (PI) Strategies
Transportation Operations (TO) Strategies
-Traffic control/design approaches
-Traffic control devices
-Project coordination, contracting, and innovative construction
-Public awareness
-Motorist information
-Demand management
-Corridor/network management
-WZ safety management
-Traffic/incident management & enforcement
12
Traffic Control/Design Approaches Construction phasing/staging Night work Weekend work Work hour restrictions for peak
travel Full roadway closures Lane shifts or closures
Reduced lane widths to maintain # of lanes
Lane closures to provide worker safety
Reduced shoulder width to maintain # of lanes
Shoulder closures to provide worker safety
Lane shift to shoulder/median to maintain # of lanes
One-lane, two-way operation Two-way traffic on one side of
divided facility (crossover) Reversible lanes Ramp closures/relocation Freeway-to-freeway interchange
closures Pedestrian/bicycle access
improvements Business access improvements Off-site detours/use of alternate
routes
13
Identification of TMP Strategies Should be based on:
project constraints construction phasing/staging plan type of work zone anticipated WZ impacts
Some agencies use strict lane closure policies/strategies or permissible lane closure times that must be followed
Agencies may use analysis tools to predict delays, queues, and impacts of detours and compare these for various strategies
14
Decisions During Design Impact TMPs Design-level decisions can influence the choice of WZ
management strategies As specific decisions are made, WZ management strategies should
also be reassessed to determine if they still apply and whether they adequately mitigate the WZ impacts of the project
Example: Preliminary engineering assessments may result in the identification of 2 alternate "construction and WZ management approaches" – 1) night work with a basic TMP, and 2) daytime work option with a more complex TMP. As design progresses, more information may become available on the feasibility of each of the approaches, leading to the elimination of the night work option. Therefore, the day option would be chosen and TMP strategies such as signal retiming and a traffic incident management plan might be used.
15
Decisions During Design Impact TMPs
A quantitative analysis conducted during design can: Yield the best estimation of the magnitude, location, duration, and costs of the WZ impacts Help identify the management strategies that best mitigate the impacts Help avoid omission or oversight of WZ safety and mobility issues prior to final design Help identify and address issues that may lead to a work stoppage during the construction stage (e.g., queue lengths or delays in excess of agency policy)
Detailed quantitative analysis during design may be the best way to get a clear understanding of the expected WZ impacts of a project Most project decisions are finalized during design as the project
design/construction team gains the best understanding of how exactly the project will be built
16
Decisions During Design Impact TMPs During detailed design, quantitative analysis
is more detailed and will lead to the development of the final design and TMP for the project
Example: Early WZ impacts analysis done during preliminary engineering using a sketch-planning tool may indicate that traffic diversion to the designated alternate route for the project would be significant, leading to a preliminary decision to upgrade and re-time the traffic signals on the alternate route.
In design a more detailed analysis using a micro-simulation tool is conducted to estimate actual diversion patterns, the volume of traffic expected to divert to the alternate, and the intersections that would be affected. This analysis may then be used to identify the number of traffic signals that need to be upgraded and the exact nature of the upgrades, and to develop the signal timing plans and estimate the costs.
17
Caltrans I-15 Devore PCCP Reconstruction: Closure Schedule, Cost, Delay Comparison
Construction Scenario
Schedule Comparison
Cost Comparison ($Millions) Max. Delay (Min)Total #
ClosuresClosure Hours
User Delay
Construction Traffic Handlin
g
Total
72-Hour Weekday
8 512 5.6 10.5 2.1 18.2 75
55-Hour Weekend
10 550 14.2 12.5 2.6 29.3 196
1 Roadbed Continuous
2 400 6.9 8.9 1.0 16.8 196
10-Hour Night-time
220 2,200 4.9 19.1 1.3 25.3 36
18
TMP State of the Practice
19
TMP Beginnings Idea for TMP provision in WZ Rule came
from Caltrans Caltrans began requiring TMPs in 2000 for all
planned activities on the State highway system Implementation of TMPs in California has helped
to significantly reduce delays in work zones
In Caltrans District 7, on the I-10 Long-Life Pavement Project, the TMP helped reduce traffic demand by an estimated 57 percent, queue lengths to 2 miles from the originally projected 44 miles, and projected delays from an estimated 1,000,000 to 16,000 total vehicle hours of delay.
20
TMP Findings - 2007 WZ Self Assessment TMPs are still a developing area Has the agency established a policy for the
development of TMPs to reduce WZ congestion and crashes? Average score for this item increased by 14% in 2006 and
by 20% in 2007 Average score was 8.5, indicating agencies are in the
execution stage of adopting TMPs into their WZ practices Two-thirds (67%) of agencies are implementing a
policy for developing TMPs
21
Caltrans TMP Fact Sheet Provides information about
Caltrans TMP Development Process
Discusses TMP categories, roles and responsibilities, and lessons learned for Caltrans
22
Caltrans TMP Development Process
23
Caltrans TMP Levels
24
What Worked for Caltrans? Encourage design and project staging that minimizes
potential traffic impacts Have District Traffic Manager and TMP Manager sign off on
TMP just prior to bid to make sure strategies reflect current traffic conditions - especially for "shelved" projects
Produce standardized forms for blanket and minor projects Produce a brief, standardized report for each major project Standardize practices for monitoring the effectiveness of
TMPs in the field
25
Missouri DOT TMP Strategies Database The TMP Database is meant to be used at the very beginning of WZ planning to choose the most effective methods from the start, with re-evaluation occurring in the design stage.
26
Virginia TMP Requirements VDOT has extended TMP requirements
to all WZ activities within State right of way and on all streets and highways that have been accepted into the State Highway System - regardless of funding source
VDOT TMP Guide: Provides guidelines for acquiring the
information to develop TMPs Contains guidance on each Project Team
member's role and responsibilities in the development of TMPs
Applies to Project Managers, Roadway Designers, Traffic Engineers, WZ Safety Coordinators, Public Affairs Managers
27
Virginia TMPs – Design RoleThe Roadway Designer: Preliminary Field Inspection
Incorporates the recommended TMP into the project’s initial roadway plans Public Hearing Meeting
Incorporates all recommendations/corrections into the preliminary TMP prior to the Public Hearing
Field Inspection Meeting Completes TMP for review by Project Team during the Constructability
Review stage for the Detail Roadway Design and Roadway Design phases of Concurrent Engineering Process (CEP)
Incorporates into the TMP all accepted recommendations/corrections submitted by Project Team
Pre-Advertisement Conference Completes final TMP for review by Constructability Review Team during
Constructability and Bidability Review stage of CEP Incorporates all recommendations/corrections submitted by Project Team into
final TMP prior to proceeding to the next phase
28
Pennsylvania Sample TMP PennDOT includes a
sample TMP in its Traffic Engineering Manual
29
WisconsinTMP Process Process
- Work Zone Impacts Assessment
- Determine Type of TMP
- Prepare Initial TMP- Update, Implement,
Monitor- Evaluate After
Project
30
Wisconsin TMP Components Type 1
Traffic Control Plan Public Information and Outreach
Type 2, 3, 4 Traffic Control Plan Public Information and Outreach Transportation Operations Incident Management
31
When are TMPs developed in Wisconsin?
Life Cycles
PMP Development
Phases
Prior to project existing in
PMP
Prior to project existing in PMP
Program Level
Scoping PMP Approval
Preliminary Plan Review
DSR PS&E Design Project
Closeout
Project Initiation Process
Needs Identification
Identify
candidate projects
Program Reviews
Concept
Definition Report
Request
authorization
Program Level
Scoping
PMP Approval
LC 00 Unprogrammed
LC 10 Authorized
LC 12 PMP Approved
LC 11 Program Level Scoping
LC 40 Award
LC 15 DSR
LC 20 PS&E
LC 00 Unprogrammed
LC 10 Authorized
LC 12 PMP Approved
LC 11 Program Level Scoping
LC 40 Award
LC 15 DSR
LC 20 PS&E
TMP TMPTMP
32
North Dakota TMP Development NDDOT has TMP development guidelines in its WZ
policy For significant projects, NDDOT compiles a TMP
team to develop and implement the TMP Has members from Planning and Programming Division,
Maintenance and Engineering Services Division, Construction Services Division, Design Division, District, FHWA, local municipality, and others as necessary
For non-significant projects: Reconstruction project – the Project Designer, Design
Division, and District will develop the TMP Other than reconstruction projects - Project Designer will
consult with Design Division and District
33
Considerations Agency WZ policies
E.g., Maximum WZ queue lengths/delays allowed
Lane Closure policies/charts that specify when a lane closure is permitted
Analytical/modeling tools used by the agency
34
Colorado Region 6 Lane Closure Strategy
Scenario: State Highway 121 (Wadsworth Boulevard), Northbound Direction, Milepoint 22.0, weekday.Solution: Referring to the Decision Tree, Wadsworth is an arterial facility. Following the right side of the chart, the appropriate schedule may be found in the table.
Look up SH 121 in the left-most column and locate MP 22.0 between 84th Avenue and 100th Avenue. The weekday schedule indicates that a lane may be closed at night between 7:00pm and 8:00am and during the midday between 10:00am and 2:00pm.
35
TMP Development Resources
36
Tips for Developing TMPs Estimate and budget for TMP development and implementation early in
project development (update as appropriate throughout project) Include funding for monitoring traffic conditions during construction to track TMP
effectiveness in case strategies need to be modified and for future WZs
Consider and address WZ impacts from a broader transportation management perspective, rather than solely a traffic control perspective Balance constructability and construction staging requirements with WZ management
strategies Coordinate phasing/staging with other strategies in TMP (TTC, TO, and PI plans)
Coordinate with other key parties to jointly identify WZ impacts issues to account for and management strategies to address them Preliminary engineering - Design team should work with other technical specialists,
including construction, traffic engineering, and public outreach/relations personnel Designers/construction engineers - Develop phasing and staging plans in consultation
with safety experts, traffic engineers, other technical specialists Construction - Maintain close coordination with local agencies on detours and signal
timings
37
Tips for Developing TMPs (cont.) Use strategies that keep lanes open, especially during peak traffic times
E.g., narrowing lanes or using shoulders to maintain number of lanes; contract incentives/disincentives; lane rental; damages for late lane opening; night work
Use "Triggers" - e.g. when 75% of max delay is approached, lane(s) are opened to accommodate traffic
Consider using extended closures or full closures versus numerous night closures
Use strategies that facilitate decision-making by the public to avoid the WZ (e.g., public awareness, advance signage in locations prior to key motorist decision points) – these tend to be highly effective
Update the TMP, as needed, throughout project development and implementation
TMP training is important for all divisions involved in TMPs Management support is needed for effective TMP efforts
38
TMP Resources Caltrans TMP Resources Web Site -
http://www.workzones.ucdavis.edu/index.php?title=TMPMain Fact Sheet: Caltrans TMPs Reduce WZ Congestion –
http://www.ops.fhwa.dot.gov/wz/practices/factsheets/factsheet11.htm Virginia DOT TMP Requirements -
http://www.extranet.vdot.state.va.us/locdes/electronic%20pubs/iim/IIM241.pdf Missouri DOT TMP Strategy Database -
http://www.modot.org/Safety/TMPStrategyMatrixVer6j.mdb Presentation on California’s TMP Development Process -
http://www.ntoctalks.com/webcast_archive/to_feb_17_05/to_feb_17_05jg.ppt Presentation on Virginia’s TMP Development Guidelines -
http://www.ntoctalks.com/webcast_archive/to_mar_19_07/to_mar_19_07_pk.ppt
39
TMP Resources WZ Safety and Mobility Rule Web Site -
http://www.ops.fhwa.dot.gov/wz/resources/final_rule.htm Contains sample TMPs, presentations, and TMP
development resources Developing and Implementing TMPs for
Work Zones - http://www.ops.fhwa.dot.gov/wz/resources/publications/trans_mgmt_plans/index.htm Contains a TMP Checklist and matrix of TMP
strategies Advanced Work Zone Management and
Design Course (NHI) - http://ops.fhwa.dot.gov/wz/outreach/nhi_wz_courses.htm