How to move player automatically into center of tile while running?

i have build a game endless run like "Temple Run" using sensor controller. first the player in center position of road (path tile), after that player will turn left, and the problem is come. when the player turn left, it's not exactly on the center of tile. maybe its on the road side left, or right. and in my game, the player must be on the center positionautomatically after turned left/right, because i will control it using sensor with default position is on the center. so there is 3 condition how player move forward, 1. move in right side of the road, 2. center of road, 3. is move in left side of the road