To amend the Clean Air Act to require employers in nonattainment areas to make certain payments to employees who are not provided with employer-subsidized parking.

Amends the Clean Air Act to provide that nonattainment plans for areas which are nonattainment for any air pollutant emitted by a motor vehicle shall require employers to provide a monthly payment to each employee for whom an employer-subsidized parking space is not provided or who elects not to use such parking space. Applies such requirement to an employer who employs at least 25 employees monthly and provides subsidized parking spaces. Requires the payment to be equal to the parking subsidy received by an employee who receives a parking benefit.