As required under 1990’s Proposition 111, every county in California is required to develop a Congestion Management Program (CMP) that looks at the links between land use, transportation and air quality. In its role as the county’s Congestion Management Agency, RCTC prepares and periodically updates the county’s CMP to meet federal Congestion Management System guidelines as well as state CMP legislation. The current CMP was adopted by RCTC in March 2010.

Each county in California has developed a CMP with varying methods and strategies to meet the intent of the CMP legislation. The CMP legislation has been found consistent with the federal Congestion Management System (CMS) program. SCAG is required under federal planning regulations to determine county CMPs within the SCAG region are consistent with the RTP.

The CMP’s Enhanced Traffic Monitoring System consists of the installation of traffic counters at call box and Caltrans’ traffic monitoring sites. This enables RCTC to have immediate access to traffic count data to effectively monitor the highway system for deficiencies. The count information can also be used for project evaluations and planning activities.

RCTC does not require Traffic Impact Assessments (TIA’s) for development proposals. However, local agencies are required to maintain minimum level of service (LOS) thresholds included in their respective general plans. Therefore, TIA’s on developments are required by the local agencies.

Local agencies whose developments impact the CMP system by causing the LOS on a non-exempt segment to fall to “F” must prepare deficiency plans. These plans outline specific mitigation measures and a schedule for mitigating the deficiency.

Click here for the Congestion Management Program