TALL42 Movable Barrier
TALL42 is a freestanding, movable concrete barrier system designed to be used with a transfer machine that can reposition the barrier, altering the traffic lane configuration. TALL42 has been specifically designed for contraflow applications for installation on high-volume traffic roadways allowing road owners to increase lane capacity during peak periods. In addition, TALL42 may be deployed on construction projects reducing lane closures during non-work periods.
The T-top shape allows the TALL42 units to be lifted and gently set down by the transfer machine with an offset distance up to 9.1 m. The transfer machine can reposition 1 km of TALL42 barrier in just 8 minutes. TALL42 is compatible with the MASH TL3 crash tested QUASH Crash Cushion providing a MASH compliant end-to-end solution.
Crash Test Evaluation
Barrier Configuation
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Freestanding
Freestanding
Barrier Configuation
Freestanding
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Barrier Configuation
Freestanding
Vehicle Type
Vehicle Mass
impact speed
impact angle
impact energy
Dynamic Deflection
Product Features
MASH TL4 Compliant
Containment of a 10,000 kg rigid truck travelling at 90 km/h and 15 degrees.
Superior Design
Easily reconfigure traffic lanes.
Permanent Applications
Provides contraflow during peak traffic periods reducing congestion.
Workzone Applications
Re-open traffic lanes during non-work periods.
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Product Data Sheet
Related Products
QUASH is a high performance non-redirective, gating crash cushion designed to shield the blunt end of the TALL42 movable concrete barrier.
Frequently Asked Questions
What are the advantages of using TALL42 movable barrier?
TALL42 is specifically designed to reconfigure traffic lanes, reducing congestion and improving the efficiency of existing road corridors. Unlike contraflows that rely upon bollards or flashing lights, TALL42 provides positive protection, demonstrating safe vehicle containment and redirection in accordance with MASH TL4 and TL3.
How does TALL42 movable barrier work?
The TALL42 units measures 1117 mm (44”) long x 1067 mm (42”) high. Each unit is manufactured with slotted flanges that are linked together with steel pins. Safe vehicle containment and redirection is developed through a combination of the mass of the system and the strength of the pinned connections.
How is TALL42 moved?
The reconfiguring of traffic lanes is undertaken using a transfer machine that lifts the interconnected TALL42 units and repositions them as required by site geometry requirements. The transfer machine also prepositions the QUASH crash cushion maintaining a MASH compliant end-to-end safety barrier system.
Is TALL42 movable barrier suitable for permanent locations?
Yes. For permanent locations, TALL42 can be repositioned to meet peak traffic demands, increasing roadway capacity and reducing travel times. The system height of TALL42 reduces headlight glare into adjacent traffic lanes and provides driver confidence.
What is a contraflow?
A contraflow is a temporary or permanent traffic management arrangement in which vehicles are directed to travel in the opposite direction to the normal flow of traffic on a roadway or part of a carriageway.
Is TALL42 movable barrier suitable for temporary or workzone applications?
Yes. For temporary locations, TALL42 reduces construction time and minimises disruption to traffic with lanes closed to traffic during working hours that can be reopened during non-work periods. In addition, the rapid repositioning of the barrier allows contractors to more effectively manage changing traffic patterns and the progress of construction throughout the site.
What crash cushion is required when deploying TALL42 movable barrier?
TALL42 is compatible with the MASH TL3 crash tested QUASH Crash Cushion providing a MASH compliant end-to-end solution. QUASH is a water filled barrier manufactured to the same shape of TALL42 allowing the entire safety barrier system to pass through the transfer machine.
Can TALL42 be deployed in verge and median applications?
Yes. The symmetrical design of TALL42 ensures the system can be impacted from either side making it ideal for verge and median installations.
What is the range of lateral transfer?
The T-top shape allows the TALL42 units to be lifted and gently set down by the transfer machine with an offset distance up to 9.1m. The transfer machine can reposition 1 km of TALL42 barrier in just 8 minutes.
What is a variable length section?
The TALL42 system requires variable length sections to facilitate smooth passage through the transfer machine and accommodate roadway alignment variations. The variable length barriers are manufactured from steel and comprise two (2) parts connected by a hydraulic cylinder allowing the segment to expand and contract. The variable length barrier sections are installed and connected in the same manner as the concrete barrier units.
