The FMCSA is revising its requirements concerning the marking of commercial motor vehicles (CMVs) and for the submission of a Motor Carrier Identification Report (Form MCS-150) to the agency. The FMCSA is eliminating the marking regulations of the former Interstate Commerce Commission (ICC), and requiring motor carriers to apply markings that conform to the requirements of this final rule. The agency is also amending its marking requirements to require that CMVs be marked with the legal name of the business entity that owns or controls the motor carrier operation, or the ``doing business as'' (DBA) name, as it appears on the Form MCS-150. Motor carriers will be allowed two years to comply with the requirement to affix the USDOT number to both sides of their CMVs, and five years to comply with the additional requirements to display the legal name or a single trade name on the CMVs currently in their fleet. The FMCSA is redesignating the regulation that requires motor carriers to submit the Form MCS-150, and requiring that all new interstate motor carriers submit a Form MCS- 150 to the FMCSA before (rather than within 90 days after) commencing operations. These revisions are intended to enhance the ability of the FMCSA, the States, and the general public to identify motor carriers. The FMCSA also revises the listing for locations of motor carrier safety Service Centers to reflect recent changes to the agency organizational structure. They were originally included in the NPRM concerning safety fitness procedures [RIN 2126-AA42, formerly RIN 2125- AE56, Docket No. OMCS-99-5467 (formerly Docket No. FHWA-99-5467)] (64 FR 44460, August 16, 1999).