| 摘要 |
A truck cab has a side door (14) via which a person enters and exits the cab by ascending and descending steps (22, 24, 26; 40, 42, 44) on a side of the truck. At least one of the steps is selectively positionable to a deployed position for use by a person ascending or descending the steps and to a non-deployed position when the truck is to be driven. The deployed position is relatively more outboard on the side of the truck than the non-deployed position.
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