What a shame! Unfortunately, we had to see this one coming. Arizona is not the most progressive state in the nation and I do believe it was the one state that had no plan of converting its road construction to metric even when the requirement was still in place. Then again, they were the last state to recognize MLK day as a state holiday. The I-19 experiment was one that was done back in the late 70's-early 80's to see the feasibility of converting highway signs. The route was chosen because it was a direct connection to Mexico. Interesting to note that the AZ DOT says they had received many complaints over the years. Once again, the silent majority strikes again. My bet is most people just didn't care enough one way or the other. As for the confusion issue, I think it proves that when it comes to roadway metrication (signage) we need to use the "all or nothing" approach. The main problem with this approach is it is also the most costly.
Phil
