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WORK ZONE

WORK ZONE. TRAFFIC. CONTROL. Scott McCanna, P.E. Traffic Control Plans Engineer. 2010. ODOT work zone. tour summary report. 2009. WORK ZONE TOURS. PURPOSE & OBJECTIVES. Quality Assurance & Statewide Consistency Design Standards & Practices making it to the field?

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WORK ZONE

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  1. WORK ZONE TRAFFIC CONTROL Scott McCanna, P.E. Traffic Control Plans Engineer 2010

  2. ODOT work zone tour summary report 2009

  3. WORK ZONE TOURS PURPOSE & OBJECTIVES • Quality Assurance & Statewide Consistency • Design Standards & Practices making it to the field? • Standards being applied uniformly Region to Region? • Construction technologies consistent with TCP contents? • Safety • Opportunity to improve upon safety concerns • Networking & Teamwork • Opportunity to hear variety of input, comments, suggestions • Improve communications between discipline groups • Improved Standards & Practices • Use feedback & scores to make improvements • Speaking of scores……

  4. WORK ZONE TOURS SCORING PROCESS • 22 Different Reviewers – Representing: • ODOT Construction Project Management & Inspection • ODOT Traffic-Roadway Section • Region Tech Centers - Design • ODOT Employee Safety • Oregon Bridge Delivery Partners (OBDP) – Design, Construction Mgmt • ODOT Major Projects Branch • ODOT Research Unit & Oregon State University • Federal Highway Administration (FHWA) • 30 Different traffic control-related “Measures” • 25 Pages of comments • 39,000 pieces of scoring data !!

  5. WORK ZONE TOURS SCORING PROCESS

  6. 77.2 75.6 74.5 73.5 73.5 71.7 71.3 70.5 WORK ZONE TOURS SCORING RESULTS 2002

  7. WORK ZONE TOURS Statewide Average Scores

  8. WORK ZONE TOURS WORK ZONE PERFORMANCE MEASURES 14th Out of 14 12th 14th 14th 14th 14th

  9. Avg. = 7.59 WORK ZONE TOURS

  10. WORK ZONE HOMEWORK

  11. WORK ZONE TOURS TO WORK ON • Portable Changeable Message Signs (PCMS) • Overuse of “ROAD WORK AHEAD” and “(USE) CAUTION” • Using dependent message fragments • Must read both panels to get entire message • Misaligned PCMS makes them illegible • In need of repair – Burned out LEDs

  12. WORK ZONE TOURS PCMS Need more informative messages Ensure visibility

  13. WORK ZONE TOURS PCMS Avoid using message fragments on a single panel…

  14. WORK ZONE TOURS PCMS First message… …Second message… Use standard rigid sign, Or non-dependent messages: TRUCKS ENTERING 450 FT WORK VEHICLES AHEAD

  15. WORK ZONE TOURS PCMS First message… …Second message…

  16. WORK ZONE TOURS PCMS • Missing LEDs can render a PCMS illegible.

  17. WORK ZONE TOURS TO WORK ON • Bike/Ped/ADA Accommodation • No significant gains made in accommodation or design • Gravel surfaces not ADA-compliant nor bicycle-friendly • More guidance to keep bikes out of work area • More guidance for peds in urban work zones

  18. WORK ZONE TOURS Bicycle, Pedestrian, ADA Accommodation • Close bike lane completely, • Redirect bicycles, • Warn motorized traffic of bike presence

  19. WORK ZONE TOURS Bicycle, Pedestrian, ADA Accommodation • Close sidewalks w/ proper signing/devices • Provide safe, efficient, signed, ADA alternate route • Provide additional signing for motorists, as needed

  20. WORK ZONE TOURS Bicycle, Pedestrian, ADA Accommodation • Close sidewalks w/ proper signing/devices • Provide safe, efficient, signed, ADA alternate route • Provide additional signing for motorists, as needed • If peds must use roadway, need ADA ramps from curb • Need channelization devices between traffic and peds • Could alternate route use existing pavement in front of local businesses?

  21. WORK ZONE TOURS TO WORK ON • Pavement Markings • Additional temp. markings needed until permanent can be applied • Faded striping in curvilinear sections • Reflective markers need better maintenance • Markings not matching Regulatory signing (“No Lane Changes”, “Do Not Pass”)

  22. WORK ZONE TOURS Temporary Pavement Markings • Channelization devices and/or temporary pavement markers should be used to substitute for permanent markings: • Nighttime/Overnight • Freeways or High ADT

  23. WORK ZONE TOURS Temporary Pavement Markings Badly damaged/missing markers mean very poor nighttime visibility Contractors required to maintain/replace damaged markers/markings

  24. WORK ZONE TOURS Temporary Pavement Markings With permanent markings in place… With poorly maintained temporary markings in place…

  25. WORK ZONE TOURS Temporary Pavement Markings

  26. WORK ZONE TOURS Temporary Pavement Markings Double-solid striping begins at regulatory sign Signing and striping must match for enforceability

  27. WORK ZONE TOURS TO WORK ON • TEMPORARY SIGN DESIGN • Sign Legend, Color, Sizes • Wordy messages • Structurally questionable (crashworthy) • Complicates enforceability • Detour Signing • Recommend more detailed signing plans • Incorrect Application • Use correct design for corresponding message

  28. WORK ZONE TOURS TO WORK ON • TEMPORARY SIGN IMPLEMENTATION • Sign Spacing • Too close together (temp. & existing) • Blocking critical guide, service signing. See TM800 • More Signs as per Specification • Additional “Abrupt Edge” and “No Center Stripe” signs • “Road Work Ahead” and “End Road Work” signs • In the middle of projects • Moved as work moves • Enforcement relies on these signs. Defines work zone limits. • “Clipped” Signs on Barrier Sign Supports • Phased out. Gone as of June-Nov ‘09, Standard Drawings • Repeated improper design and usage • Use 36”x36” sign from now on

  29. WORK ZONE TOURS Temporary Sign Design

  30. WORK ZONE TOURS Temporary Sign Design …should have become…

  31. WORK ZONE TOURS Temporary Sign Design …should look like…

  32. WORK ZONE TOURS Temporary Sign Design

  33. WORK ZONE TOURS MOBILITY • Largely positive comments regarding traffic flow and delay through work zones • Comments eluded to delays or slowed traffic stemming from: • “Gawk” effect • Tricky traffic merges or alignment shifts • Confusing detour (signing?) • Contractor operation oversights • Gravel staged surfacing created very slow traffic • Flagging operations

  34. WORK ZONE SUCCESSES

  35. WORK ZONE TOURS SUCCESSES THIS YEAR • Temporary Signing • Quality was good – visibility, sheeting condition • Particularly high quality roll-up signs

  36. WORK ZONE TOURS Temporary Signing

  37. WORK ZONE TOURS SUCCESSES THIS YEAR • Channelization Devices • Plastic Drums in excellent condition • Drum Tapers excellent (especially for freeway lane closures!) • Overall good device spacing • Barricades in good condition

  38. WORK ZONE TOURS Channelization Devices

  39. WORK ZONE TOURS SUCCESSES THIS YEAR • Temporary Concrete Barrier • Good condition & alignment • Use of “screening” helps prevent “gawking” & improves speeds • Increased use of Reflective Barrier Panels helps delineate barrier

  40. WORK ZONE TOURS Concrete Barrier

  41. WORK ZONE TOURS SUCCESSES THIS YEAR • Pavement Markings • Most cases, striping was fresh, clear, well placed • Markers notable in freeway crossovers and on-site diversions • Reflective markers in good shape and alignment • Flexible markers need more attention

  42. WORK ZONE TOURS Pavement Markings

  43. WORK ZONE TOURS MOBILITY • No unreasonable delays experienced through 60 projects. • Average travel speed through majority of work zones was at or near the posted speed. • For Flagging operations: • Statewide: Max. = 10 min. Average = 2.1 min. (for 16 projects) • By Region: • For Temporary Signals: • Statewide: Average = 2.5 min. (for 7 projects)

  44. What's Happening in TCP? 2009 MUTCD Short Term Traffic Control Handbook TCP Design Class 2010 Work Zone Tours

  45. Short Term Traffic Control Handbook • Oregon Temp. Traffic Control Handbookfor Operations of 3 Days or Less (OTTCH) • Currently Rewriting • ODOT, County, City participation • Changes to Structure & Organization • Deadline: End of September • To allow for OTC Review & Approval • Anticipated release: January, 2011

  46. 2009 MUTCD • Part VI – Oregon Supplements • Currently developing supplements • ODOT, County, City participation • Deadline: End of September • Working simultaneously with OTTCH rewrite • Anticipated release: 2011 • Can we start enforcing now? Not yet. Not until officially adopted by OTC

  47. 2010 Work Zone Tours • Tours slated for July & August • Assembling Project Lists from PM Offices in June • Recommendations? Let me know! • Interested in Participating? • Two, three & four-day trips available • Seating is extremely limited • Truly dedicated participants only! • The Van awaits!

  48. TCP Design Class • Traffic Control Plans Design Workshop • Three-Day, Intense Design Class • From Intro to MUTCD, to Standard Drawings and Specification Writing • Complete with Final Exam • Three Opportunities per Year • Early March • May 11 – 13, 2010 • October 5 – 7, 2010 • Visit ODOT HR Training website for details and to register

  49. ADDITIONAL INFORMATION • TCP Unit Website • www.oregon.gov/ODOT/HWY/TS/traffic_control_plans.shtml • TCP Design Manual • 2009 Work Zone Tour Summary Report • Work Zone Traffic Analysis (WZTA) Tool & Manual • Oregon “Short Term” Temp. Traffic Control Handbook (OTTCH) • Transportation Management Plan info and Examples • Scott M. McCanna, P.E.State Traffic Control Plans Engineer 355 Capitol St. NE – 5th Floor Office:503.986.3788Cell: 503.580.6095FAX: 503.986.4063email:scott.m.mccanna@odot.state.or.us

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