Measure M is the one-half cent sales tax approved by the Orange County voters in November 1990 for countywide transportation improvements. Freeway Improvements More than 40 percent of the anticipated Measure M revenue is allocated for freeway and transitway related improvements. One hundred of Orange County's most deficient intersections are targeted for immediate improvements. Local jurisdictions implement these improvements once a plan is submitted and approved for Measure M funding. The transit system will consist of expanded intercity and commuter train service between south Orange County and Los Angeles, commuter train services between riverside and Irvine and transitway connectors on freeways.
Plans call for developing smart streets, which include some of the county's busiest roadways.
Improving traffic signal coordination throughout the county is also a measure M priority. Additionally, upgrading existing arterial intersections and the interchanges between arterial roads and freeways, and improving the efficiency of the existing road system are important aspects of the 20 year plan. Local governments submit applications to compete for funds. The Orange County Local Transportation Authority is responsible for administering the Measure M sales tax revenue.