EXTERNAL SLIDING THRESHOLD ASSEMBLY FOR VEHICLE DOORS

A threshold assembly for a vehicle door includes an external sliding threshold configured to be coupled with an exterior surface of a vehicle having a doorway. The external sliding threshold is configured to extend over the doorway to provide a threshold surface on which one or more passengers enter the vehicle via the doorway or exit the vehicle via the doorway. The external sliding threshold laterally projects from the exterior surface of the vehicle to reduce or eliminate a spatial gap between the vehicle and a platform from which the one or more passengers enter the vehicle or onto which the one or more passengers exit the vehicle.