If you have over the amount of weight you can carry can you not move or do you have to get ride of things or is your agility decreased.

Rulebook p. 215
when you exceed your limit you take -10 agi to all movement tests and -1 AB and if you carry it for more than than your TB in hours you must check toughness or take 1 point of Fatigue, and test again for each hour after that.