The VLT tyre inspection system uses stereo imaging to measure.
- tread depth of the tyres
- sideslip (toe-in / toe-out of the steered wheels)
- tyre under / over pressure indication
- Soon it will also measure camber and check for tyre side wall damage and nails in the tyre.
The VLT tyre inspection system is installed just after the roller brake tester. The measurements are done while the wheels are rotating and so the entire circumference is checked. This takes only a few seconds. The test results are printed (per axle) on the brake tester test report. The system uses stereo imaging to check the tyres. There are 2 digital stereo cameras per wheel. Clever software takes care of the rest.