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CONCEPTS FOR ENHANCING THE EFFECTIVENESS OF TRAFFIC CONTROL PLANS

CONCEPTS FOR ENHANCING THE EFFECTIVENESS OF TRAFFIC CONTROL PLANS. Stuart Anderson Gerald Ullman Making Work Zones Work Better Workshop. Background. Maintenance of traffic issues and traffic control plans (TCP) Temporal and spatial requirements impact construction Temporal - time

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CONCEPTS FOR ENHANCING THE EFFECTIVENESS OF TRAFFIC CONTROL PLANS

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  1. CONCEPTS FOR ENHANCING THE EFFECTIVENESS OF TRAFFIC CONTROL PLANS Stuart Anderson Gerald Ullman Making Work Zones Work Better Workshop

  2. Background • Maintenance of traffic issues and traffic control plans (TCP) • Temporal and spatial requirements impact construction • Temporal - time • Spatial - dimensions • Options available

  3. Background

  4. Problem • Lack of early and sufficient input of traffic and construction expertise • Policy directives, funding and other factors often limit alternatives • Solution may be sub-optimal

  5. Preferred Practice • Prior to detailed PS&E design • During detailed PS&E design

  6. Consider • Pavement related processes • What is done • Pavement treatments and materials

  7. Consider • Non-pavement related processes • How is pavement treatment accomplished • Traffic and construction related issues

  8. Process Approach • Integrate pavement and non-pavement related processes • Process developed under NCHRP Project 10-50A • Fundementals • Start early in project development • Use multidisciplinary team approach • Analyze Traffic approaches to minimize impacts • Promote construction input on continuous basis

  9. Process Approach • Four main steps • Identify candidate sections • Identify pavement condition • Screen potential strategies • Evaluate feasible strategies • Content of steps • Objectives • Key activities • Issues to consider • Resources • Practical illustrations

  10. Process Approach • Validated by industry • Case studies demonstrated applicability • Documented in final report • A Process for Selecting Strategies for Rehabilitation of Rigid Pavements, Final Report, NCHRP Project 10-50A, February 2002 • Contact NCHRP Program for Copy

  11. Selection Process

  12. Screen Potential Strategies

  13. Resource • Description of resource • Relevance to analysis • References for more information • Examples • Work zone analysis tool - QUICKZONE • Workshop approach - Get In, Get Out, Stay Application • Constructibility Review Process Workbook - NCHRP Report 391

  14. Traffic and Construction Issues

  15. Traffic and Construction Issues:Caltrans I-710 Alternative • Traffic • Segmental full closure (3 to 5 miles) in one direction • All lanes available to traffic weekdays • Install ITS during construction • Recommend use of alternate routes (I-110, I-605, Lakewood Blvd. and other local streets)

  16. Traffic and Construction Issues:Caltrans I-710 Alternative • Construction • Two concrete plants • Concrete plants produce about 1800 CY per hour • Back-up equipment and extra sources of materials • Recycle existing PCC pavement • Ten-hour shifts • Three stage operation • 16 weekends

  17. Evaluate Potential Strategies

  18. Level of Analysis • DOT standard traffic and construction approach • DOT standard traffic and construction approach but with some enhanced techniques to address special issues • A corridor wide project-oriented traffic and construction approach

  19. Traffic Analysis:Michigan I-496 Project

  20. TCP Development for PS&E • Traffic • Constructibility reviews • Contract methods • Materials and equipment See NCHRP Synthesis 293

  21. Benefits • Efficient and cost effective construction • Minimize impact on road users, local businesses • Safer work zones • Special needs identified early

  22. Application • Most projects types and sizes • May have higher impact on projects with high traffic volumes • Concepts currently being tested • TRB Task Force A5T60, “Accelerating Innovation in the Highway Industry” • IPRF research project, “Traffic Management Studies for Reconstruction of High Volume Roadways”

  23. Application - TF A5T60 • Accelerated Construction Technology Team (ACTT) • Corridor review • “Outside” experts visit state experts • Share, learn, and promote new ideas • Two-day workshop with Indiana and Penn DOTs • Proposed use of innovation in twelve areas • Ultimately - DOT decides what is best for their project

  24. Corridor improvements Contracting and procurement techniques Work zone traffic management Stay out techniques Constructibility Geotechnology Utility delays Prefab/modular High speed QA/QC Workforce health and safety Training and education Communications of best practices Application - Twelve Areas

  25. Application - IPRF Project • Task 6 Conceptual Study • Workshops with DOT • Late in programming/early in design • Brainstorm traffic and construction issues • Recommend feasible alternatives • Current studies • Mississippi DOT - I-55 South of Memphis • Washington DOT - I-5 through Seattle

  26. Lessons Learned • Do not “set” design basis too early • Team approach enhances TCP development • Early involvement of traffic and construction expertise helps identify possible problems and solutions

  27. Conclusions • DOTs should be encouraged to follow concepts throughout TCP development • Constructibility reviews integral to TCP development • Team approach essential especially on larger projects

  28. Thank you! Discussion?

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