I recently had an unfortunate experience($206) with a WA State Trooper too near Vancouver but that is another story. Those weighmasters with the portables can ruin your day for sure. Point is I travel all over the mountain states and am familiar with what is used in WA, OR, MT, ID, UT etc. and was only pointing out some things a home builder could do or want to consider based on my personal experience of building them from scratch.