The change is effected through a change in the metric for determining environmental significance Level of Service (“LOS”), which measures delay at intersections, to vehicle miles traveled (“VMT”), which is a measure of the number of automobile trips resulting from the project.  The stated rationale underlying the change is that the use of LOS encourages mitigation aimed at reducing delays by increasing traffic flow, including expanded roadways, construction of more lanes and other automobile traffic facilitation measures; which theoretically leads to “induced demand,” i.e., more capacity at intersections allowing additional cars to use them; and, ultimately, to more air quality and greenhouse gas impacts from those additional cars.  As the story goes, a standard of environmental significance based on VMT will encourage the use of mitigation measures such as increased bicycle paths, accommodations for pedestrians, and other measures that will reduce automobile ridership in the long term.  The problem is that the theory underlying the Update is made up more of holes than of cheese.