Impact attenuators for concrete barriers

The yellow tanks at the end of barrier lines protect drivers in a head-on impact. We sell, rent, install, fill and certify them.

Request a quote Call 514 701-5524

TL-1, TL-2 and TL-3Based on posted speed
Engineer certificationOIQ member
22,000-litre tankerAvailable 24/7

How an impact attenuator works

It is designed to collapse progressively to reduce damage in a crash. Its length is set from a precise chart based on the posted speed.

Summer
The tanks are filled with water.
Winter
They are filled with calcium chloride, mixed so it only freezes below -40 °C. A frozen attenuator no longer does its job.
TL means Test Level
The number from 1 to 3 is the protection level required for the posted speed.

Filling and draining on site

22,000 Ltanker trailer capacity

-40 °Cfreezing point of the winter solution

24/7filling and draining

The trailer can also drain the water before adding the winter solution, or the reverse in spring.

A complete service, à la carte or all-in

Sale or rental
The TL model that fits the posted speed on your site.
Installation
Assembly to manufacturer specifications and the length chart.
Filling
Water in summer, calcium chloride in winter.
Certification
Certificate from an OIQ member engineer, required at mobilization.

Related services

Concrete Jersey barriersMTQ-compliant Jersey barriers for rent or purchase.
Crash trucks (TMA)Required in 70 km/h and higher zones.
Signage plansSigned and sealed when needed, delivered fast.

Frequently asked questions

Why fill attenuators with calcium chloride in winter?

Because water would freeze. Calcium chloride solution stays liquid down to -40 °C, so the attenuator can still absorb an impact.

What do TL-1, TL-2 and TL-3 mean?

TL stands for Test Level. The number from 1 to 3 is the protection level, chosen according to the posted speed on site.

Is an engineer’s certificate required?

Yes. At mobilization, a certificate from an engineer who is a member of the Ordre des ingénieurs du Québec confirms the attenuator is assembled to manufacturer specifications.

Can you do the filling only?

Yes. All our services are available à la carte or all-in: sale, rental, installation, filling and certification.