When a temporary fence panel won't stop a two-tonne vehicle, you need something that will. Temporary concrete barriers — commonly called Jersey barriers, road barriers, or T-barriers — are purpose-built to redirect vehicle impacts and protect workers, pedestrians, and infrastructure in high-risk environments.

What Are Temporary Concrete Barriers?

Temporary concrete barriers are precast or water-filled modular units, typically 1–2 metres in length and 800mm–1000mm in height, with a distinctive sloped profile. The slope is engineered to redirect the lower portion of a vehicle upward on impact, reducing the lateral force transferred to the barrier.

They are available in two main types:

  • Precast concrete barriers — heavy, permanent-weight units that offer maximum vehicle containment. Typically 750kg–1000kg per unit. Require machinery for placement.
  • Water-filled plastic barriers — hollow units filled on-site with water. Significantly lighter when empty, easier to deploy with smaller crews.

Key Applications on Australian Sites

  • Road construction and maintenance works — separating live traffic lanes from work zones. Often mandatory under state road authority traffic management guidelines.
  • Civil construction sites — separating plant movement areas from pedestrian pathways.
  • Events and festivals — creating vehicle exclusion zones around pedestrian precincts, stages, and crowd areas.
  • Loading docks and logistics areas — protecting dock infrastructure and workers from vehicle strike.
  • Flood and emergency management — water-filled barriers can be deployed rapidly as temporary levees.

Safety Benefits

  • Vehicle containment — a properly deployed concrete barrier line will stop or significantly redirect a vehicle that loses control
  • Passive protection — barriers work without any action from workers
  • High visibility — clearly visible to drivers, reinforcing lane discipline and reduced speeds in work zones
  • Crew confidence — workers in proximity to live traffic report greater confidence when a physical barrier separates them from vehicles

Compliance Considerations

On Australian roads, traffic management plans (TMPs) are required for any works that affect traffic flow. Concrete barriers are frequently specified in TMPs for works on roads with speed limits above 60km/h, works involving lane closures on multi-lane roads, and any site where the risk assessment identifies a credible vehicle intrusion risk.

TFH Site Direct supplies both precast and water-filled temporary concrete barriers suitable for construction, road works, and events. Browse the full product range at /products or contact us for a project-specific quote.