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:


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



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



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



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



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



North Texas Tollway—“Mobile Barriers Protect Workers”

Mobile Barriers Protect Workers


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



National Work Zone Safety Clearinghouse



Developmental History of Highly Mobile Barriers

Moveable Barriers


Mobile Barriers Web Site