NCHRP 07-21: Asset Management Guidance for Traffic Control Devices, Barriers, and Lighting 2014...

NCHRP 07-21: Asset Management Guidance for Traffic Control Devices, Barriers, and Lighting


2014 ATSIP Annual Meeting

Presented byNancy Lefler Vanasse Hangen Brustlin, Inc.


Agenda Background Objective Approach Findings (so far) Next Steps Questions


Background

Agencies faced with growing complexities in investment decision-making

Transportation asset management is one strategy for helping to address some of these challenges.


Asset Management

MAP-21 defines asset management as:

“..a strategic and systematic process of operating, maintaining, and improving physical assets, with a focus on engineering and economic analysis based upon quality information, to identify a structured sequence of maintenance, preservation, repair, rehabilitation, and replacement actions that will achieve and sustain a desired state of good repair over the lifecycle of the assets at minimum practicable cost.” (23 U.S.C. 101(a)(2), MAP 21 §1103).‐


Asset management based on the following five questions:

What is the state of my assets? What is my required level of service? Which assets are critical to sustained performance? What are my best “Operations and Maintenance” and

“Capital Improvement” investment strategies? What is my best long-term funding strategy?


Traffic and Safety Assets

Established Asset Management practices for bridge and pavement

Not same level of existing guidance for traffic and safety assets


OBJECTIVE


Objective

Develop guidance on asset management for traffic and safety assets.

Assets: • Signs• Traffic signals• Pavement markings/markers• Barrier systems• Lighting

Image Sources (top to bottom): VHB, PennDOT, FHWA


Audience

State, county, and local agencies that have a stake in the management of safety related assets.


OVERVIEW OF APPROACH


Overview of Approach

Phase I: Identify Best Practices and Develop Guidance Structure

Phase II: Conduct Case Studies and Finalize Guidance


Phase 1 Task 1: Kickoff Meeting and Amplified Work Plan Task 2: Literature Review Task 3: Identification of Best Practices in Bridge and Pavement Task 4: Detailed Guidance Outline Task 5: Draft Chapter Task 6: Revise Work Plan Task 7: Phase I Interim Report Task 8: Phase I Interim Meeting


Phase 2 Task 9: Conduct Case Studies Task 10: Draft Guidance Report Task 11: Signal Tool Gap Analysis and Tool Development Task 12: Vet Guidance Task 13: Final Guidance Report and Tools


FINDINGS - LIT REVIEW AND BEST PRACTICES


Lit Review:Cross-cutting issues

Aligning agency organization for TAM• Strategic business approach, not another bureaucracy• Allow for self-assessment and gap analysis

Data integration• Each asset requires specific measures of performance - data

collection historically in silos• Transportation systems are fundamentally spatial, allowing for

GIS-based data collection and integration• Data collection should consider practicality, accuracy validation,

performance tracking, and prediction


Lit Review:Assets have varying levels of supporting literature

Signs, Signals, and Pavement Markings• A great deal of literature related to performance measurement• Critical data consist across many agency types• Many decision support/work planning tools exist

Lighting and Barriers• Critical data identified, but performance measurement is

inconsistent or unclear• Management tends to be reactive, not proactive• Few tools exist for management of these assets


Lit Review: Consistent gaps identified for selected assets

Few resources discuss practical life-cycle issues• Cost of maintenance or replacement• Anticipated lifespan of asset components

Return on investment benefits – Specifically safety benefits of providing asset

Tort liability impacts Integration of new capabilities Prioritization methods and safety analyses for decision

support Timely accomplishment reporting


Pavement & Bridge Best Practices Review:Key Practice Areas

Automated data collection• Used extensively for measuring pavement condition• Very promising for low cost data collection – some recent

examples of this Element data collection• Commonly used for bridge inspections, now mandatory for NHS

bridges under MAP-21• Can be extended to ancillary structures (e.g., high mast lights)

QA/QC for inventory and condition data collection• Well established area, particularly for pavement• Basic QA/QC techniques are directly applicable


Pavement & Bridge Best Practices Review:Key Practice Areas (continued)

Performance measures• Focus area for many pavement/bridge asset management efforts• Basic approaches for developing measures, setting targets are

transferable to traffic & safety assets• Literature emphasizes importance of developing a small set of

key measures for summarizing condition Use of management systems for modeling at a network

and/or project level• Successful examples for pavement and bridge• Current models tend to be data hungry – need to consider how

to adapt approaches to work with less detailed data


Pavement & Bridge Best Practices Review:Key Practice Areas (continued)

Work Recommendations and Tracking• Important component of structures inspections, in particular• Should be incorporated where visual inspections are used

Risk Management• Area of significant recent attention, particularly with MAP-21

requirement for risk-based asset management plans• This area is evolving rapidly, with a number of efforts evaluating

how to incorporate risk in resource allocation and day-to-day management practice


Challenges in Adapting Pavement & Bridge Management Approaches

Data collection cost• Cannot justify same data collection approaches for large

inventories of short-lived assets Time requirements• Current approaches often require significant historic data

Assumption of independence between assets• Assumption generally made that the decision of when to work

on a given pavement section or bridge does not depend on consideration of other assets• Cannot view traffic & safety asset classes in isolation


GUIDANCE OUTLINE


Overall Guidance Structure

Introduction Cross-cutting Issues Signs Traffic Signals Pavement Markings Barrier Systems Lighting


Topics Covered in Each Chapter

Planning and Scoping Inventory and Inspection Condition and Performance Assessment Decision Support Work Planning and Tracking Additional Considerations Specific to Assets


Case Study Locations Utah DOT Minnesota DOT Oregon DOT / Portland, Oregon Virginia DOT Washing State DOT / Seattle, Washington Columbia County, GA Central Mississippi Planning and Development

District (Jackson) ????


Next Steps

Finalize case studies Develop and vet chapters Signal tool gap analysis and development Finalize guidance and tools - December 2015


Questions/Comments?

NCHRP 07-21: Asset Management Guidance for Traffic Control Devices, Barriers, and Lighting 2014...

Documents

Transcript of NCHRP 07-21: Asset Management Guidance for Traffic Control Devices, Barriers, and Lighting 2014...