Peninsula Traffic Congestion Relief Alliance is an organization committed to resolving the issues involved in getting to and from work in the county of San Mateo. The organization helps people to reach work in faster, easier and efficient ways through providing up-to-date commuter information. The ultimate objective of the Alliance, San Mateo County's Transportation Demand Management Agency, is to reduce carbon footprint and have better air quality by reducing the number of single occupancy vehicles in the county.