Cape Town launches crash warning system

3D laser system installed at Cape Town bridge in anti-crash pilot project.

Cape Town has introduced a new 3D laser detector to prevent tall vehicles from crashing into the low railway bridge over the city's Atlantic Road.

Despite road signs warning of its 2.5-m height restriction, at least one vehicle a week gets stuck under the bridge in the coastal Muizenberg district.

The 3-D warning system, which is deployed 150m from the bridge, measures the height of oncoming traffic using an infrared laser beam.

When it detects vehicles taller than 2.5m it activates a large flashing sign, using high-powered LED lights, for 30 seconds.

The city plans to use the technology, devoloped by a local company, in other accident black-spot bridges around Cape Town.