Included in the Appendix C TR34 2003 specification is a truck simulator which has been developed to help gauge the correct flatness of floors. The simulator method has been used in the US for nearly thirty years and was also used in the UK in the early 1980s.
A sensor on top measures height differences between front and back of the truck and the other from side to side, resulting in data which provides differential height measurements and rates in change of those measurements for forward movement of the truck.
The simulator replicates how a VNA truck acts.
