Mobility Performance Reports (MPR) in accordance with Government Code section 14032.6:
Highway Congestion Monitoring Program (HICOMP): 2008 was the last year in which the HICOMP Report was prepared. In 2009, Caltrans began preparing the Mobility Performance Report (MPR), which represents the completion of a transition to an improved way of measuring congestion. Because of the marked differences in methodology between the MPR and the HICOMP Annual Data Compilation, comparison of the congestion information between the two is not recommended. For more details on the differences between the HICOMP Report and the MPR, read the first chapter of the MPR 2009.