Portable Positive Protection Typical Application for TMA Trucks

Portable Positive Protection Typical Application for TMA Trucks

Typical Application for TMA Truck Portable Positive Protection

It is important to have advance warning of the mobile lane closure using TMA trucks for advance warnings with appropriate signing to warn drivers of the lane closure.

The typical application diagram below includes a potential approach to executing this mobile lane closure when using portable positive protection. While this approach reflects the MUTCD typical application for mobile operations, other deployments may or may not include the shadow vehicles. In either case, advance warning for drivers is of utmost importance to the safety of the operation.

A typical application drawing to relay main points about how to use portable positive protection.

An example of a traffic control configuration for a mobile lane closure:

About

SPA Safety Systems

At SPA Safety Systems of Flanders NJ, contractors and engineers can find the best in class and high-performance TMA trucks for work zone safety in New Jersey, PA, NY, CT, RI, or MD.

We carry an extensive inventory of Truck Mounted Attenuator trucks, Cone Trucks and Scissor Lift Trucks for sale or rent, and equipment and parts inventory. For more information call (973) 347-1101 or visit our dust control water trucks web page at https://spasafetysystems.com/.

 

Over 36 Years of Serving the Construction Industry

SPA is a family owned and operated business celebrating over 36 years of serving the construction industry. We developed our reputation for excellence by providing quality products and superior service.

For more information call (973) 347-1101 or visit our dust control water trucks web page at https://spasafetysystems.com/ .

 

SPA Safety Systems
278 Old Ledgewood Rd
Flanders, NJ 07836

(973) 347-1101

Citation and credits:

Mobile Barriers LLC.. (2016). Portable Positive Protection: A Guide for Short Duration and Short-Term Work Zones. (Based on Material Developed by ATSSA for the FHWA Work Zone Safety Grant Program ed.). USA: Retrieved from https://www.mobilebarriers.com/

Information Sources

Federal Highway Administration Resource Charts

http://safety.fhwa.dot.gov/roadway_dept/policy_guide/road_hardware/resource_charts/

 

TX Deployment—“Texas Department of Transportation Rolls out Mobile Barriers MBT-1”

http://mobilebarriers.com/images/TxDOT%20Rolls%20Out%20Mobile%20Barriers%20MBT-1.pdf

 

Mobile Barriers MBT-1 Cost benefit Analysis—with Analysis from CO, CA and Others

http://mobilebarriers.com/images/docs/Cost%20Benefit%20Analysis%20-%20Mobile%20Barriers%20MBT-1.pdf

 

Field Guide for the Placement of Shadow Vehicles in Work Zones

Field Guide for the Use and Placement of Shadow Vehicles in Work Zones

 

Guidelines on the Use of Positive Protection in Temporary Traffic Control Zones

https://www.workzonesafety.org/fhwa_wz_grant/atssa/atssa_positive_protection_guidelines

 

Manual on Uniform Traffic Control Devices – Part 6 sections 6F and 6G

http://mutcd.fhwa.dot.gov

 

North Texas Tollway—“Mobile Barriers Protect Workers”

Mobile Barriers Protect Workers

 

Washington State Department of Transportation Work Zone Traffic Control Guidelines Book M54-44

http://www.wsdot.wa.gov/Publications/Manuals/M54-44.htm

 

National Work Zone Safety Clearinghouse

http://www.workzonesafety.org

 

Developmental History of Highly Mobile Barriers

Moveable Barriers

 

Mobile Barriers Web Site

www.mobilebarriers.com

10 Suggested Steps to Take When Planning TMA Portable Positive Protection

10 Suggested Steps to Take When Planning TMA Portable Positive Protection

10 Suggested Steps to Take When Planning to Use Portable Positive Protection

 Developed by ATSSA for the FHWA Work Zone Safety Grant Program

The following list shows a collection of steps to follow in implementing portable positive protection.

This list can be applied to either towable devices or steel barrier sections already staged on the roadside for future use. Many strategies are possible and those that are intended should be defined in the contract plans and provisions or as well detailed temporary traffic control plans (TTCP).

Diagram - Mobile Operation on a Multi-Lane Road

(1) Identify crew members who will perform the work and those who will assist with traffic control. A responsible person, such as the Traffic Control Supervisor or Agency Inspector may be charged with this duty.

(2) Organize crew members and meet ahead of the scheduled operation to discuss the deployment. Be sure that manufacturer guidance is reviewed and understood in light of State and local requirements. Some agencies follow a Pre-Activity Safety Plan process, which is a best practice approach and may include an assessment for portable positive protection. TTCPs should be available for all involved and written instructions may be needed for some activities.

(3) Ensure that the necessary equipment is available to perform the work activities. The Traffic Control Supervisor and Agency Inspector should refer to an equipment list developed from equipment shown on the TTCP.

(4) Develop and/or review site-specific TTCPs for location of work, type of work activity, time of day and potential lighting needs, safe stopping locations, positioning of semi-trailers for unloading devices, and other temporary traffic control devices such as signs and arrow boards that will accompany the installation.

(5) Review the existing traffic data for the work location and analyze the project’s effect on traffic flow, including the potential for queuing, speed variability, and the potential hazards associated with slowing traffic as the device is put into place. The higher the traffic levels, the more benefit in reduced exposure to offset cost of the portable positive protection. Work hours may need to be established to minimize traffic impacts.

(6) For a right-lane closure it may be necessary to stop on the shoulder in advance of the work space to find the appropriate gap in traffic where the lane can be closed safely, in keeping with accepted safety practices.

(7) For a left lane closure, consider the limited inside shoulder area and how the operation will be initiated, including ground placement of advance warning signs, if applicable. This setup may require a mobile lane closure if the inside shoulder is narrow (especially if a median wall exists) and advance warning signs are placed on the ground instead of or in addition to using vehicle-mounted signing.

(8) Consider potential lateral and longitudinal displacement and leave room in the event that lateral deflection occurs when a vehicle strikes the protection device. A lateral buffer space may need to be established, usually one lane width.

(9) When using trailers, consider slightly angling the cab/tractor away from the side where traffic will pass. This may help avoid cab/tractor impact from an errant vehicle as it travels down the outside of the trailer in the event of impact. When in operation, ensure that a truck mounted attenuator is lowered into place, if applicable.

(10) Once the operation is complete, all materials and tools are removed from the site, and all personnel are accounted for in the vehicles, use radio communication from the upstream vehicle (advance warning or shadow vehicle) to determine the appropriate timing for moving the operation back into the flow of traffic and opening the lane. For steel barriers, it may be possible to move the sections back to the shoulder prior to loading back onto a removal vehicle.

ATSSA article on "Ten Suggested Steps to Take When Planning to Use Portable Positive Protection"
FHWA Work Zone Safety Article

“Portable Positive Protection: A Guide for Short Duration and Short Term Work Zones.” The National Work Zone Safety Information Clearinghouse, Developed by ATSSA for the FHWA Work Zone Safety Grant Program, Sept. 2015, www.workzonesafety.org/training-resources/fhwa_wz_grant/atssa_portable_positive_protection/.


About

SPA Safety Systems

At SPA Safety Systems of Flanders NJ, contractors and engineers can find the best in class and high-performance TMA trucks for work zone safety in New Jersey, PA, NY, CT, RI, or MD.

We carry an extensive inventory of Truck Mounted Attenuator trucks, Cone Trucks and Scissor Lift Trucks for sale or rent, and equipment and parts inventory. For more information call (973) 347-1101 or visit our dust control water trucks web page at https://spasafetysystems.com/.

 

SPA Safety Systems
278 Old Ledgewood Rd
Flanders, NJ 07836

(973) 347-1101

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