The Auto Lift Arm ECO Wheel Tracker saves energy, is space efficient and can double daily testing output. The Wheel Tracker CRT-WTECO-A performs both procedures A and B specified for the small scale device in EN 12697-22. Procedure A requires that six specimens are tested. For procedure B, only two specimens need to be tested, but rut depth must be measured at more points along the longitudinal rut profile. To speed up the testing process, the CRT-WTECO-A was designed to test two specimens within one working day via a pre-programmable unique lift arm mechanism.