A roll-in cot (10) comprises a support frame (12) for supporting a patient above a loading surface (500) of an emergency vehicle, the support frame (12) comprising a front end (17) and a back end (19)； a pair of front legs (20) and a pair of back legs (40) slidingly coupled to the support frame (12), wherein each front leg (20) comprises at least one front wheel (26) and each back leg (40) comprises at least one back wheel (46). The roll-in cot (10) further comprises a cot actuation system operable to actuate the front legs (20) and the back legs (40) either simultaneously or independently and a control box (50) cooperative with the cot actuation system to switch between an independent mode and a synchronized mode. In the synchronized mode the front legs (20) and the back legs (40) are raised and lowered simultaneously, and in the independent mode the front legs (20) and the back legs (40) are raised and lowered independently.
