1923: The Los Angeles County Board of Supervisors adopts a resolution calling for comprehensive highway study in the County.
One result is the County of Los Angeles Regional Plan of Highways, which produces two volumes of work before being discontinued: Section 2-E, San Gabriel Valley, produced in 1929, and Section 4, Long Beach-Redondo Area, published in 1931.
More information be found in the County of Los Angeles Regional Plan of Highways, Section 2-E, San Gabriel Valley full-text report.
1974: Arthur D. Little, Inc., an internationally respected research firm, concludes that the Southern California Rapid Transit District‘s rapid transit plan for Los Angeles County could save the average driver $1,100 per year in his/her household budget.
More information can be found in the Southern California Rapid Transit District’s Selected Community Impact Analyses for Proposed Rapid Transit Synopsis.