- u -
- UA_B : chrono::vehicle::ChMultiLink
 - UA_CM : chrono::vehicle::ChMultiLink
 - UA_F : chrono::vehicle::ChMultiLink
 - UA_U : chrono::vehicle::ChMultiLink
 - UCA_B : chrono::vehicle::ChDoubleWishbone , chrono::vehicle::ChDoubleWishboneReduced
 - UCA_CM : chrono::vehicle::ChDoubleWishbone
 - UCA_F : chrono::vehicle::ChDoubleWishbone , chrono::vehicle::ChDoubleWishboneReduced
 - UCA_U : chrono::vehicle::ChDoubleWishbone , chrono::vehicle::ChDoubleWishboneReduced
 - UL_A : chrono::vehicle::ChSolidAxle , chrono::vehicle::ChThreeLinkIRS
 - UL_C : chrono::vehicle::ChSolidAxle , chrono::vehicle::ChThreeLinkIRS
 - UL_CM : chrono::vehicle::ChSolidAxle , chrono::vehicle::ChThreeLinkIRS
 - UNIV : chrono::vehicle::ChPitmanArm , chrono::vehicle::ChPitmanArmShafts
 - UNIV_AXIS_ARM : chrono::vehicle::ChPitmanArm , chrono::vehicle::ChPitmanArmShafts
 - UNIV_AXIS_CHASSIS_LAT : chrono::vehicle::ChMultiLink
 - UNIV_AXIS_CHASSIS_TL : chrono::vehicle::ChMultiLink
 - UNIV_AXIS_LINK : chrono::vehicle::ChPitmanArm , chrono::vehicle::ChPitmanArmShafts
 - UNIV_AXIS_LINK_LAT : chrono::vehicle::ChMultiLink
 - UNIV_AXIS_LINK_TL : chrono::vehicle::ChMultiLink
 - UNIV_AXIS_LOWER : chrono::vehicle::ChThreeLinkIRS
 - UNIV_AXIS_LOWERBEAM_BEAM : chrono::vehicle::ChHendricksonPRIMAXX
 - UNIV_AXIS_LOWERBEAM_CHASSIS : chrono::vehicle::ChHendricksonPRIMAXX
 - UNIV_AXIS_TORQUEROD_CHASSIS : chrono::vehicle::ChHendricksonPRIMAXX
 - UNIV_AXIS_TORQUEROD_ROD : chrono::vehicle::ChHendricksonPRIMAXX
 - UNIV_AXIS_UPPER : chrono::vehicle::ChThreeLinkIRS
 - UPRIGHT : chrono::vehicle::ChDoubleWishbone , chrono::vehicle::ChDoubleWishboneReduced , chrono::vehicle::ChMacPhersonStrut , chrono::vehicle::ChMultiLink , chrono::vehicle::ChSingleWishbone