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Work Zone Safety

Work Zone Safety. SDMay04-01 Spring 2004.

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Work Zone Safety

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  1. Work Zone Safety SDMay04-01 Spring 2004 DISCLAIMER: This document is provided as part of the requirements of a civil engineering course at Iowa State University and does not constitute a professional engineering design or a professional land surveying document. Although the information is intended to be accurate, students, instructors, and Iowa State University make no claims, promises, or guarantees about the accuracy, completeness, or adequacy of the information. The user of this document shall ensure that such use does not violate Iowa law with regard to professional licensing and certification requirements, including any work resulting from this student-prepared document required to be under the responsible charge of a licensed engineer or surveyor. RoadSafety@iastate.edu

  2. Acknowledgements • Client Mark Bortle, Safety Engineer (IaDOT) • Advisors Dr. John Lamont (ECpE) Prof. Ralph Patterson III (ECpE) AAP Duane Smith P.E. (CCEE) Prof. Veronica Dark (Psych)

  3. Overview • Safety Problems in the Work zone • Work zone broken into 7 “segments” • Team members tasked with different solutions that fit in the various “segments” • Final recommendations for each section made

  4. Outline • Defining the RS-4 Work Zone Matthew Baker: EE • Analyzing Crash Data Nancy Suby-Bohn: CE

  5. Outline“Grabbing driver’s cognitive reasoning” • Rumble Strips Josh Keith: CE • Fine Display Sign Angel Anderson: CprE • Automated System Abdul Nuhu: EE

  6. Outline • 511 Phone/Website Clinton Dawson: CprE • Educating the Public Amit Agarwal: CprE

  7. List of Definitions • IaDOT : Iowa Department of Transportation • CTRE : Center for Transportation Research and Education • AADT • MUTCD

  8. Flagger Flagger Combined with a pilot car • Lane Closure • stretches up to 2 ½ miles Road Standard – 4 Work zone (RS-4) Picture courtesy of MUTCD 2000

  9. Approaches Used - Grid

  10. Approaches Used - Matrix

  11. 1 - Lane closure 2 - Lane shift/crossover (head-to-head traffic) ** 3 - Work on Shoulder or median 4 - Intermittent or Moving work ** 8 - Other type of work zone (explained in narrative) 9 - Unknown

  12. Temporary Rumble Strips • Placement- Advance Warning Area • Tactile and auditory stimulus to focus driver’s attention on impending construction • ATM temporary rumble strips most tested- at least 6 states • ¼” Thickness combined with road construction orange • Majority of research taken from MwSWZDI and Texas Transportation Institute • Our goal was to make a final recommendation for Iowa from the research

  13. Recommendations • To be consistent with the work zone and the MUTCD, rumble strips shall always be construction orange • Rumble strips to be implemented on roads with less than 2000 AADT based on the crash data • 10 strips 10’ apart followed by 500’ feet • Then 8 Strips, 5’ apart followed by 500 feet • Last set of 8 strips shall be 18” apart • 150’ in advance of the “Road Work Ahead” sign

  14. - Rumble Strips being tamped into place

  15. Work Zone Exit/Entrance • Goal: Design all encompassing system • Configure light timing mechanisms • Determine most effective light configuration • Modify traffic lights to needed specifications • Four types of work zones considered • Possible Systems • R.C flagman (Model RCF 2.4) • Incorporates breakaway gate • Automatic Mode and Manual Mode • Future modifications to signal range • Future incorporation of advanced sensory mechanism

  16. Work Zone Exit/Entrance Cont… • Horizon Signal Technologies (SQ3TS) • Easy visibility from multiple vantage points. • Malfunctions are detectable in the system, and are relayed to a cellular phone. • Needs physical barrier • Recommendations for a universal device • Highly visual qualities of the PLT model • Long range capabilities • Gated System • Advanced vehicle detection system • Highly configurable network

  17. Examples of Flow Control devices

  18. Speed Control After Initial Warnings “Getting one’s attention is not the same as getting to one’s decision process.” • Learned Irrelevance – lack of need to respond • Conscious Choice – realizing a need to respond • Instrumental Conditioning – reaction to police car Veronica Dark, Assoc Professor, Department of Psychology, ISU

  19. Signs www.addcoinc.com/t_smart.htm and pennsylvania IDOT

  20. Variable Message Fine Display Sign • Radar + Variable Message Board + Fine • Programmable • Data Collection Options

  21. Things to Consider • Variety of Message Boards, Software, and modifications • Effective Fine Message • (e.g. “The cost for your speed would be…”) • Testing

  22. 511 Phone/Website • Suggestions to improve or change current 511 website and phone system • Add features that are desired • Spread awareness among public to increase use • Raise user friendliness of the system

  23. 511 proposed changes

  24. Educational component • Multiple Objectives: • Educate the public (drivers, future drivers) • Different types of drivers (SUVs, cars, trucks, etc..) • Different approaches for each category • Educate the construction workers • Using the new setup • Basic safety guidelines to follow

  25. Research • Research methods used currently • Whom do they target? • Do they fulfill the requirement of the project? • Adaptable? • Cost Effectiveness • Different campaigns underway • Study the campaigns in Iowa and other states • Campaigns in other countries (EU, Canada, etc..) • Analyze their effectiveness • Whether they are realizable in Iowa

  26. Medium • Electronic Media (PSA’s, TV, Radio) • Newspapers (local, national) • Magazines • Internet (better presentation on IaDoT site, Google, etc..) • Pamphlets and flyers at local events • Work Zone Safety Week events • Driver’s manual for driving exam (commercial, private) • Educational material in school, driving school

  27. Methodology • Researched and discussed target audience • Campaigns • Other media • Analysis • Final Recommendation

  28. Future Work • Implementing of individual components by senior design teams as desired by IaDoT • Testing by the IaDoT during construction • Analysis of results and updating the design as required, by future teams • Involvement by other states in improving the setup

  29. Resource Requirements

  30. Project Costs

  31. Schedule – Estimated and Actual

  32. Conclusion • Different components being designed for greater effectiveness • All the components might not be implemented immediately or together • Components are aimed for maximum cognitive stimulation • Components meet design plan submitted to the client

  33. Questions ? http://seniord.ee.iastate.edu/may0401/

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