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WZTC REFRESHER

WZTC REFRESHER. According to the MMUTCD. “ The responsibility for the design, placement, operation, maintenance, and uniformity of traffic control devices SHALL rest with the public agency or the official having jurisdiction.”. How do we make work zones safer?.

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WZTC REFRESHER

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  1. WZTC REFRESHER

  2. According to the MMUTCD • “The responsibility for the design, placement, operation, maintenance, and uniformity of traffic control devices • SHALL rest with the public agency or the official having jurisdiction.”

  3. How do we make work zones safer? • Improve communication with road users by providing POSITIVE GUIDANCE • Follow applicable standards and guidelines • Conduct Inspections • Use COMMON SENSE • Do more than the Minimum • Have an effective Traffic Control Plan

  4. CONSISTENCY • Make driving through a work zone a “No Brainer” • Do not force the motorist to decide where the appropriate or safe place to drive is! • Guide motorists through the work zone! • Make their actions automatic!

  5. COMPONENTS OF A TTC ZONE

  6. ADVANCE WARNING SIGNS

  7. METHODS OF MOUNTING SIGNS

  8. CHANNELIZING DEVICES

  9. MDOT CHANNELIZING DEVICES

  10. ARROW BOARDS

  11. CITY MASTER PLAN • All WZTC Plans and Devices shall follow current State and Federal regulations and Typical Diagrams provided by the Engineering Dept, unless actual conditions of Street Configuration or Traffic Pattern dictate otherwise.

  12. RESPONSIBILITIES • Departments • Overall compliance within their departments • Assure that all work has been assessed for traffic and worker hazards • Maintain appropriate department records on WZTC planning. Provide employee training appropriate to their level of responsibility • Provide PPE and devices necessary to set up a safe work zone • Assure that contractors who work under their direction follow the appropriate traffic control plan while working in the City ROW

  13. RESPONSIBILITIES • Supervisors • Identify operations and tasks that require Work Zone SafetyPlanning • Develop standard operating procedures for routine operations • Assure employees have the proper PPE and WZTC Devices before work begins • Evaluate the success of work zone safety plans

  14. RESPONSIBILITIES • Employees • Comply with Work Zone Plans as best as situations allow. • Wear proper PPE and follow safe work practices. • Make appropriate corrections to WZTC setups as feasible or reporting issues to their supervisor.

  15. GENERAL REQUIREMENTS • A TRAFFIC CONTROL PLAN shall be developed for each Work Zone • Deviations from plan shall be documented • No Planned project shall be started until all appropriate WZTC devices are in place • EMERGENCY WORK SITUATION: Use whatever acceptable and non-conflicting signs and devices that are readily available. • As soon as feasible the appropriate signs and devices shall be erected.

  16. Any ROW work requiring a WZTC plan requires a review of the impact on pedestrian traffic. Advance warning signs for pedestrians should be considered on a case by case basis. Considerations include the amount of pedestrian traffic, alternative options for pedestrians, and whether placing advance warning signs would create additional hazards for pedestrians.

  17. STATE LAW CHANGES • 2008 PA 298 adds MCL 257.611a • Gives a properly trained and attired worker the authority to direct traffic within a work zone even in conflict with an existing traffic control device. • Notifies motorists of the obligation to follow the instructions of the worker directing traffic. • Disregarding the Traffic Regulator is a civil infraction.

  18. City of Midland Guidelines • Local Streets – Residential, Low Volume, Low Speed, No Pavement Markings • Short Duration or Mobile Work • Use strobe or rotating light on vehicles or equipment.

  19. City of Midland Guidelines • Local Streets – Residential, Low Volume, Low Speed, No Pavement Markings • Short Term (Up to 12 Hours) • Strobe or rotating light on vehicles • Cones or barrels to separate traffic from Work Area • One sign in each direction that best describes the work situation: Road Work Ahead, Utility Work Ahead, Road Narrows • Signs may be non-reflective • Signs may be mounted on portable supports with a one-foot bottom height if workers are present.

  20. LOCAL STREETS • INTERMEDIATE TERM (Overnight up to Three Days) – • Signs must be retro-reflective if left up overnight. • Excavated areas must be protected with Barrels or Type II Barricades. • Signs must be left up overnight if Work Area extends more than 3’ into roadway. • Signs left up while workers are not on site must be a minimum of 5’ bottom height.

  21. MAJOR STREETS • Major streets may be in residential, commercial, or industrial areas. • Speed limits vary from 25 to 55 MPH and generally have higher traffic volumes than local streets. • Major streets have centerline or other pavement markings.

  22. MAJOR STREETS • SHORT DURATION AND MOBILE WORK • Use strobe or rotating beacon on vehicles or equipment. • Use a lighted arrow board in non-residential high traffic volume areas.

  23. MAJOR STREETS • SHORT TERM (Up to twelve hours) • Cones or barrels shall be used to channelize traffic around the work area. • Lighted arrow boards must be used for lane closures. • A full set of Advance Warning signs shall be used if enough spacing is available. • If traffic is moving across the centerline of a two lane, two-way street to get around a work area, devices shall be used to separate opposing traffic and Road Narrows signs will be used.

  24. MAJOR STREETS • INTERMEDIATE TERM (Overnight to three days) • Use barrels to channelize traffic. • Use a full set of Advance Warning signs. • Signs must be retro-reflective with a 5’ bottom height. • Use Work Zone Begins, End Road Work, and Speed signs if space is available.

  25. MAJOR STREETS • LONG TERM (More then three days) • Use a full set of Advance Warning signs. • Use barrels to channelize traffic. • Signs must be retro-reflective with a minimum 5’ bottom height. • Use Work Zone Begins, End Road Work, and Speed signs if space is available.

  26. PEDESTRIAN TRAFFIC CONTROL • All pedestrian walkways that are impacted by work zones shall be blocked by barricades and signs at the point of closure. • Advance warning signs may be required on a case by case basis depending on volume of pedestrian traffic, length of closure, location of alternative walkways for pedestrians, or when not placing advance signs would create additional hazards for pedestrians • Signs warning of Hot Asphalt shall be placed on all pedestrian ramps crossing paving areas while asphalt is hot. See Typicals.

  27. General Guidelines for Signs and Tapers • For Short Duration, Mobile, or Short Term work areas where workers are always on site, signs mounted on portable supports may have a 1’ bottom height. • Signs, which impact a pedestrian walkway, shall have a minimum 7’ vertical clearance from the walkway. • Signs left up overnight must be retro-reflective and a minimum 5’ bottom height.

  28. General Guidelines for Signs and Tapers • All signs used in a sequence shall be the same type and mounted at the same height. • Do not mix rollup and hard backed signs or reflective and non-reflective signs. • Specialty signs, such as Street name and Regulatory signs, not readily available in a rollup material but available as a hard backed sign may be used with rollup signs if they are mounted at the same height as the rollup signs.

  29. General Guidelines for Signs and Tapers • Normal spacing for signs should be 10 times the speed limit. • To accommodate short streets or short blocks sign spacing on Local Streets may be reduced to 4 times the speed limit and on Major Streets may be reduced to 8 times the speed limit. • If the configuration of a street does not allow all signing to be placed even with shorter spacing then the sign with the most general wording may be omitted, i.e. Road Work Ahead in a two or more sign sequence.

  30. General Guidelines for Signs and Tapers • Devices used to channelize traffic shall be the same throughout a line. • Devices used overnight shall be retro-reflective in accordance with the MMUTCD. • Taper lengths shall follow the given chart unless the taper impacts a cross street or commercial driveway. Sound judgment should be used in deciding to shorten a taper when there is such a conflict.

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