Another technology for measuring transport quality is using electronically equipment.
Today you can get measurement equipment from 200 Euro and up. All depend on quality and what kind of risks you are going to measure. The advantages using equipment is that you are able to measure the bad spots. The disadvantage is you are not able to measure every parcel as you do by using statistics. If you only use measurement equipment you have to realise that many of your test runs have no relevant data because nothing happened. Often a combination of both methods is the most efficient way to analyse.