No motor common carrier of passengers subject to 49 U.S.C. subtitle IV, part B shall operate a motor vehicle in interstate or foreign commerce on which the seating of passengers is based upon race, color, creed, or national origin. [36 FR 1338, Jan. 28, 1971. Redesignated at 61 FR 54709, Oct. 21, 1996, as amended at 62 FR 15423, Apr. 1, 1997]