Summary: The Federal Motor Carrier Safety Administration (FMCSA) requests public comment on Polytech Plastic Molding's (Polytech) application for an exemption from the requirement that lighting devices be steady burning. The exemption would allow the company to operate commercial motor vehicles (CMVs) equipped with a module manufactured by Intellistop, Inc. (Intellistop) which pulses the rear clearance, identification, and brake lamps from low-level lighting intensity to high-level lighting intensity 4 times in 2 seconds when the brakes are applied. FMCSA requests public comment on the applicant's request for exemption.