G104       *Keep your Bumpers together. Bumpers may not fail such that a segment completely detaches, any corner (as defined in R401) of a Robot’s Frame Perimeter is exposed, or the team number or Alliance color are indeterminate.

G108       Opponent’s zone, no extension.  A ROBOT whose BUMPERS are intersecting the opponent’s LOADING ZONE or COMMUNITY may not extend beyond its FRAME PERIMETER. Violations which are both MOMENTARY and inconsequential are an exception to this rule.

R102       *Starting Configuration – no overhang. In the Starting Configuration (the physical configuration in which a Robot starts a Match), no part of the Robot shall extend outside the vertical projection of the Frame Perimeter, with the exception of its Bumpers and minor protrusions such as bolt heads, fastener ends, rivets, cable ties, etc.

R403       *Bumpers shouldn’t move. Bumpers must not be articulated, relative to the Frame Perimeter.