Skip to main content

REBLOC H4b Gantry: milestone in safety

The slim profile of the H4b Highway Gantry means it excels in congested areas where there is heavy traffic but little land for traditional gantry systems.
By David Arminas April 9, 2024 Read time: 2 mins
REBLOC’s integrated system provides a double-sided H4b safety barrier that acts as foundation for the base pole of the gantry system (image courtesy REBLOC)

REBLOC reports that it has unveiled the world's first H4b-tested highway gantry system, a pioneering breakthrough in road safety.

The company says that its new system revolutionises the conventional approach of a cast-in-place foundation that includes the base pole and safety barriers on both sides.

REBLOC’s integrated system provides a double-sided H4b safety barrier that acts as foundation for the base pole of the gantry system. Rigorous H4b testing of the complete system has shown exceptional stability, making it ideal for central reservations to ensure superior safety.

The system comprises three precast concrete barriers. The two outer barriers flank the central barrier housing the integrated foundation and base pole. EN-1317 compliant testing ensures reliability upon vehicle impact.

Additional installations including light poles or traffic signs can be easily incorporated on top of the certified system. The precast concrete elements are securely anchored to an embedding depth of only 200mm. An inspection access simplifies electric cabling. All three elements are firmly connected using steel plates on top of the barriers.

REBLOC says that the system's no-deflection performance in H4b testing means that it is suitable for central reservation use on highways with high speed limits. But there are many other key features, such as the design itself – it optimises space and aesthetics as well as eliminates the need for separate structures.

As well, the slim profile - less than 1m wide at its widest point - means it excels in congested areas where there is heavy traffic but little land for traditional gantry systems.

For more information on companies in this article

Related Content

  • Korean bridge construction poses challenges
    April 5, 2012
    On South Korea's southern coast, an innovative highway sea crossing is providing many engineering challenges The new Busan-Geoje crosses from South Korea's second city to its biggest island and is slightly shorter than the 12km of the country's famous Incheon project. In addition the main cable stay bridge for the Busan-Geoje project has a 475m span rather than the 800m of the Incheon central span. However the 8.2km Busan-Geoje project faces perhaps greater technical challenges and also includes a second b
  • Formwork innovations help bridge building
    July 7, 2015
    A series of formwork developments are helping with challenging bridge construction projects around the world - Mike Woof writes In the Polish city of Krakow, a cost-effective cable stayed bridge is being constructed using a balanced cantilever technique. The current expansion of the Krakow metropolitan railway network (KST) requires the building of a crossing of the Krakow-Plaszow railway junction. Ensuring that daily rail operations remained unaffected during the construction of the 252m long crossing w
  • New barrier, crash cushion and access control technology will benefit road user safety
    October 26, 2012
    Protecting road users, with barriers, crash cushions or access control systems, is crucial for network safety - Mike Woof writes Tough regulations are now in place in Europe and the US, requiring road authorities to provide safer road infrastructure than in the past. Technologies to reduce the severity of vehicle impacts against obstructions or redirect vehicles into the roadway should help cut injuries amongst drivers and passengers alike. The specifications for the use of crash cushions and barriers can v
  • Innovative Ohio River Bridge crossing
    March 31, 2016
    Work is underway on an innovative new bridge link over the Ohio River in the US.