Colorado Revised Statutes Title 25. Health § 25-7-130. Motor vehicle emission control studies

(2)(a) The department of public health and environment, motor vehicle emission control section of the air pollution control division, shall develop a pilot program for the purpose of testing a representative sample of motor vehicles with various vehicle emission control alternatives which may include emission testing and maintenance, air pollution control tune-up, and vehicle modification alternatives as determined by the commission.

(b) Based upon the results of the pilot program and emission control studies, the commission shall develop recommendations for implementing programs of emission testing or mandatory maintenance, or both; air pollution control tune-ups; and vehicle modifications, including altitude modifications and retrofit control systems, for the control of motor vehicle emissions. Such recommendations shall include information on the costs and air pollution control effectiveness of alternate control measures and legislative and regulatory measures necessary to implement an effective program. Any program recommended shall be based upon establishing statewide minimum standards and shall include more stringent standards for motor vehicles registered in air quality control basins defined by the commission.