The gauge array portrayed in the previous chapter (Figure 2) has many practical applications;
however, two are essential to the study of between gauge precision. First, since the gauge array is
centered along the outside wheelpath at a facility where drivers are used to traffic the pavement,
wheel wander can be captured by the gauge array. If a truck was tracking closer to the edge of the
pavement, the outside gauges would be able to receive the more direct hit. Second, each strain
gauge is duplicated. In other words, each strain gauge has one other gauge with the same
orientation, depth, and transverse offset from the edge stripe. For example, gauges one and ten from
Figure 3 form a longitudinal, left of the wheelpath pair. Some strain gauges did not survive the
construction process, and the redundancy of gauges allows for data still to be collected at the same
offset and orientation.