Whether temporary or permanent, J-J Hooks highway barriers reduce the risk of head-on collisions from out-of-control vehicles crossing over the median. The weight of barriers and the interlocking J-J Hooks design provide sufficient inertia to redirect an impacting vehicle without requiring attachment to the highway. Jersey and F-shape barriers reduce the risk of erratic vehicles deflecting back into the traffic stream after barrier collision, avoiding traffic pile ups. Concrete barrier also decelerates errant vehicles within tolerable limits.

Transition Sections, Bridge Barriers, and other special designs available in some locations. Certain construction projects may require that free-standing highway barrier be connected to barrier sections which are pinned to the roadway or bolted to bridge decks. In these instances, a transition section may be used between the free-standing and restrained sections. J-J Hooks free-standing, restrained, and transition sections will connect directly to each other.

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Concrete construction barriers protect construction workers by creating a high level of containment, by restraining stray vehicles from entering a work zone. Concrete highway barriers allow construction sites to operate safely in close proximity to busy roadways. Precast concrete barriers are useful for redirecting vehicles into new traffic patterns during different phases of construction.

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Frequently precast barrier is used in permanent installation by extending the base by 2-3 inches and embedding this extension into the roadway paving. Precast Barrier can be used on bridges in a bolt-down installation or pinned to the pavement for roadway widening when a pavement cut is used on the edge of the roadway.