A campaign to raise the sales tax in Los Angeles County to fund billions of dollars in transportation improvements claims in TV ads that the plan will reduce traffic by 15 percent, but that's not the full story.
The ads don't explain those gains are projected 40 years into the future when traffic and population will have grown beyond current levels.
Measure M will be decided by county voters this November. It would extend a half-cent sales tax increase approved by voters in 2008 and add an additional half-cent increase forever, or until voters act to repeal them. Estimates of the cost of the tax increase for each individual in the county range from $25 to $65 annually.
The revenues would fund massive rail expansion and highway improvements, including a subway under the Sepulveda Pass, an extension of the Gold Line to Claremont and acceleration of the Purple Line subway construction to finish in 2024, 10 years early than planned.
The Yes on M campaign has been running a series of TV ads championing the measure with the claim, "Yes on M will reduce the time you're stuck in traffic by 15 percent a day."