Interpretation ID: aiam3519
Manager
Vehicle Safety Division
Pennsylvania Department of Transportation
Harrisburg
PA 17123;
Dear Ms. Phillips: This responds to your letter of November 16, 1981, concernin differences between the Vehicle Equipment Safety Commission (VESC) Regulation on sun screening devices and applicable Federal standards. In addition, you asked about the requirements of several Federal motor vehicle safety standards and how they affect Pennsylvania vehicle inspection standards.; Your first question concerns any differences in light transmittanc requirements between the Federal standard and the 70 percent light transmittance requirement set by VESC in its Regulation No. 20, *Performance Requirements for Motor Vehicle Sun Screening Devices*. We have issued a Federal Motor Vehicle Safety Standard No. 205, *Glazing Materials*, which specifies performance and location requirements for glazing used in vehicles. The standard sets a minimum light transmittance level of 70 percent for glazing materials used in areas requisite for driving visibility, such as the windshield and front side windows.; As explained in the enclosed letter, the agency does not consider su screening solar films to be glazing materials themselves and thus they would not have to comply with Standard No. 205. However, as the enclosed letter explains, use of such devices on motor vehicles would be prohibited in certain cases if the vehicle glazing no longer complies with the light transmittance or other requirements of the standard.; You also asked if bumper height is regulated by a Federal standard. Th agency has issued, under the authority of the Motor Vehicle Information and Cost Savings Act (15 U.S.C. 1901 *et seq*.) and the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1391 *et seq*.), a Part 581 Bumper Standard (49 CFR Part 581, copy enclosed) that specifies performance requirements for bumper systems. One aspect of performance regulated by the standard is the impact protection provided by the bumper at certain heights.; Section 110 of the Cost Savings Act (15 U.S.C. 1920) provides, i applicable part, that:; >>>No State or political subdivision thereof shall have any authorit to establish or enforce with respect to any passenger motor vehicle or passenger motor vehicle equipment offered for sale any bumper standard which is not identical to a Federal bumper standard.<<<; Section 103(d) of the Vehicle Safety Act (15 U.S.C. 1392(d)) provides in applicable part, that:; >>>Whenever a Federal motor vehicle safety standard established unde this title is in effect, no State or political subdivision of a State shall have any authority either to establish, or to continue in effect, with respect to any motor vehicle or item of motor vehicle equipment any safety standard applicable to the same aspect of performance of such vehicle or item of equipment which is not identical to the Federal standard.<<<; Therefore, unless the Pennsylvania regulation is identical to the Par 581 Bumper Standard, it is preempted.; Finally, you asked about Federal safety standards regulating the heigh of the windshield. The agency has not issued any safety standard specifying requirements for the vertical height of the windshield. Therefore, Pennsylvania's inspection standard on vertical windshield height is not preempted.; Sincerely, Frank Berndt, Chief Counsel