Gregory Industries rolls out Safety Roller Barrier in North America

Gregory Industries, based in the US state of Ohio, is now the exclusive North American distributor for the Safety Roller Barrier system. Gregory has opted to market the innovative South Korean roller barrier technology in North America, offering a novel solution for road safety. The SRB is a MASH TL-4 longitudinal barrier that works by absorbing and converting shock energy into rotational energy. Prime locations for installations are areas where vehicles are exposed to frequent accidents. SRB is highly visi
June 19, 2017 Read time: 2 mins
Rolling along: vehicle directional energy is transferred in rotational energy
Gregory Industries, based in the US state of Ohio, is now the exclusive North American distributor for the Safety Roller Barrier system


7823 Gregory has opted to market the innovative South Korean roller barrier technology in North America, offering a novel solution for road safety. The SRB is a MASH TL-4 longitudinal barrier that works by absorbing and converting shock energy into rotational energy. Prime locations for installations are areas where vehicles are exposed to frequent accidents.

SRB is highly visible with a noticeable colour and self-luminescence which alerts drivers – especially at night - to the danger of that particular curve or stretch of road. The system can be used as a median barrier or roadside barrier.

The SRB, manufactured by the South Korean company Evolution in Traffic Innovation, consists of rotating barrels made of ethylene-vinyl acetate that are aligned within a continuous metal frame. Ethylene-vinyl acetate has better shock absorption characteristics than rubber or urethane.

Upon impact by a vehicle, the barrels rotate to convert shock energy from the vehicle into rotational energy. This propels the vehicle forward back onto the road instead of crashing through the barrier or becoming entangled in a destroyed barrier system.

Importantly, with upper and lower frame sections, the guardrail can handles impacts from large and small vehicles.


Gregory launched the SRB into the North American market at the 2017 ATSSA Traffic Expo in Phoenix, Arizona, in February. The company said that it is working with several states to develop pilot projects and complete installations.

Gregory Industries is the exclusive North American distributor also for the Guardian 5 (G5) – MASH TL-5 longitudinal barrier system.

The strong and flexible MASH TL-5 longitudinal barrier is designed to safely capture and redirect a fully loaded 36,290kg vehicle. The company said that the G5 is a cost-effective and safer alternative to concrete barriers and is intended for use in areas of high congestion and median cross-over accidents.

Road Markings, Barriers & Workzone Protection

For more information on companies in this article

Related Content

  • TRL delivers its vision
    July 31, 2012
    The UK's world-renowned TRL (Transport Research Laboratory) is celebrating its 75th birthday this year, and the objective of its work has not changed In 1938 Richard Stradling, director, wrote that "the objective of all the research work at RRL [now TRL] is to accumulate that body of scientific knowledge which is an essential factor in the economical and efficient construction and maintenance of our roads. Practical application of the results must be the aim throughout." While TRL's remit today is far more
    Read More
  • Weigh in motion technology reduces road damage
    February 8, 2012
    Overweight vehicles cause enormous damage to road structures but they can be caught, even at high speed. Weigh-in-motion or WIM devices are designed to capture and record axle weights and gross vehicle weights as vehicles drive over a measurement site.
    Read More
  • Pothole problems cause traffic delays
    April 21, 2023
    Pothole problems are a major cause of traffic delays and vehicle damage in many developed nations
    Read More
  • Ground control to mining truck offers efficiency gains
    June 19, 2015
    Autonomous and remote control machines are not about to take over the world, but they can provide efficiency gains and savings in some operations – Colin Sowman writes The thought of autonomous machines may conjure up visions of an Orwellian future where society works for the ‘common good’ defined by an all-powerful being and in which people are insignificant in terms of their needs, aspirations and physical wellbeing; of machines that relentlessly carry out their task regardless of anybody or anything that
    Read More

Highlighted Content