Senate Bill 743 required OPR to develop revisions to the CEQA Guidelines establishing criteria for determining the significance of transportation impacts. Discuss changes to the CEQA Guidelines for analyzing transportation impacts that focus on the use of vehicle miles traveled (VMT) as a measure of transportation impact, rather than level of service (LOS). Examine the key differences between VMT and LOS, gain an overview of VMT calculation methodologies and explore examples of the factors to consider in developing significance thresholds. As part of the thresholds subject, examples of transportation impact analysis using LOS and VMT will be discussed for various land development and transportation infrastructure projects. Planning, legal and other considerations will be covered with respect to shifting from LOS to VMT.