R409       *BUMPERS shouldn’t move. BUMPERS must not be articulated, relative to the ROBOT PERIMETER.

R408       *Weight limit with BUMPERS. The total weight of the ROBOT (as described in R103) with BUMPERS must not exceed 135 lbs. (~61 kg)

R407       *BUMPERS shouldn’t be wedges. BUMPERS must not act as wedges when interacting with other BUMPERS.

R403       *BUMPER extension limit. BUMPERS must not extend more than 4 in. (~101 mm) from the ROBOT PERIMETER.