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News

14 June 2018
| Videos

Bump car testing on the Toowoomba Second Range Crossing project

Have you heard of bump car testing?

As part of our quality assurance, we have to achieve a minimum criteria in terms of roughness counts per km (an internationally standardised test). This is tested using a vehicle-mounted laser profilometer which is driven along the road at 80km/hr.

Low roughness counts increase driver satisfaction and safety, and reduces vehicle wear.

This criteria is achieved through careful attention to paving processes and survey control on all layers of the pavement, not just the top layer.

During the life of the Toowoomba Second Range Crossing, roughness will be regularly tested and the results used to assist with maintenance.

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