49 C.F.R. § 385.419 How long is a safety permit effective?
Title 49 - Transportation
Unless suspended or revoked, a safety permit (other than a temporary safety permit) is effective for two years, except that: (a) A safety permit will be subject to revocation if a motor carrier fails to submit a renewal application (Form MCS–150B) in accordance with the schedule set forth for filing Form MCS–150 in §390.19(a) of this chapter; and (b) An existing safety permit will remain in effect pending FMCSA's processing of an application for renewal if a motor carrier submits the required application (Form MS–150B) in accordance with the schedule set forth in §390.19(a)(2) and (a)(3) of this chapter.
Title 49: Transportation
PART 385—SAFETY FITNESS PROCEDURES
Subpart E—Hazardous Materials Safety Permits
§ 385.419 How long is a safety permit effective?
