Except as specified in § 238.201(b), all passenger equipment placed in service for the first time on or after September 8, 2000, shall have a coupler carrier at each end designed to resist a vertical downward thrust from the coupler shank of 100,000 pounds for any normal horizontal position of the coupler, without permanent deformation. Passenger equipment connected by articulated joints that complies with the requirements of § 238.205(a) also complies with the requirements of this section.