emissions and reduce fuel consumption. Once you get above 55 mph, fuel consumption and pollutant emissions increase dramatically and nonlinearly with each 5 mph. Moreover, vehicle crash fatalities are reduced significantly with the lower speed limits. Japan has the same philosophy, speed limits are around 55 mph almost everywhere in Japan.

We may eventually end up being forced to have lower speed limits here on the Wasatch Front if we can't get the air pollution reduced enough for federal clean air health requirements. That makes it all the more ironic that our clueless state legislature recently raised the speed limit to 70 mph on I-15 in major parts of the Wasatch Front.