Standard 3 Point Rut Depth System
Enhanced 5 - 30 Point Rut Depth Systems
Complete Transverse Profile and Rut Information (1,280 points or 4,000 points)
Rutting is a depression or groove worn into a road or path by the travel of wheels over the surface. Ruts can be formed by wear, as from studded snow tires common in cold climate areas, or they can be formed through the deformation of the asphalt concrete pavement or sub base material. Rut-like depressions can be formed on gravel roads by the erosion from flowing water.
Ruts prevent rainwater from flowing to the side of the road into ditches or gutters. Rainwater trapped in ruts is a common contributing factor to hydroplaning crashes.
- Standard 3 Point Rut Depth System
- Enhanced 5 – 30 Point Rut Depth Systems
- Complete Transverse Profile and Rut Information (1,280 points or 4,000 points)
3 Point Rut Measurement
The basic system uses data from three laser height sensors mounted in a protective enclosure attached to the front of the vehicle. They are collinear and equidistant from each other, normally spaced 34.5 inches apart to match the predominant wheelpath spacing.
5 Point Rut Measurement
The next level is five-point rutting with laser height sensors. The additional height measurements come from angle measuring lasers mounted on top of the bumper or normal lasers mounted in extensions. In either setup, the lasers are configured to make measurements on the pavement 12 to 18 inches beyond the sides of the vehicle. The five-point measurement is similar to obtaining readings from laying a straight edge across each wheel path. This arrangement has the advantage of determining separate left and right rut depth measurements.
High Resolution Transverse Profile
The highest level which gives the most accurate results is the transverse profile data collection system. This system measures 4,000 points across the 4.0 m (13 ft) transverse profile, leading to extremely accurate rut measurement. Additionally, this system allows for near continuous longitudinal coverage at highway speeds. ICC software can additionally calculate cross-sectional area and volumes of bumps and ruts, detect edge drop-off, report wheel path location and location of deepest rut, and characterize the transverse smoothness of the road.
- Bumper supports up to 30 lasers for height measurements
- Separate left and right rut depth measurements
- Determine rut cross-sectional area and volumes, detect edge drop-off, report wheel path location and identify double or triple rutting with a 3D system.