The Federal Motor Carrier Safety Administration FMCSA requests public comment on the application from Casey's Services Company USDOT No. 162449 Casey 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.