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R401       *BUMPERS almost all around. ROBOTS are required to use BUMPERS to protect the entire ROBOT PERIMETER. Gaps of less than 1.25in (3.17cm) between adjacent segments are permitted as long as all corners are filled per R406. A single gap larger than 1.25in (3.17cm) is permitted, as long as at least 5.0in (12.7cm) of ROBOT PERIMETER on each side of each corner is protected by BUMPER.

An arc is considered to have infinite corners and therefore may not have a gap larger than 1.25in (3.17cm).

Figure 8‑4 BUMPER coverage requirements

Image showing BUMPER coverage requirements (1)Image showing BUMPER coverage requirements (2)

Similar Rules

Rule R403
R403       *BUMPER extension limit. BUMPERS must not extend more than 4.0in (10.16cm) from the ROBOT PERIMETER.
Rule R406
R406       *Fill BUMPER corners. Corner joints between BUMPERS must be filled with uncompressed padding material extending at least 2.25in (5.72cm) from the corner with no gaps or voids. Examples of implementation are shown in Figure 8‑10.
Rule R405
R405       *BUMPERS interact with BUMPERS. While navigating the FIELD normally, all BUMPERS must have padding (per R402-A) supported by backing (per R402-B) entirely filling the BUMPER ZONE, a space between 2.5in (6.35cm) and 5.75in (14.61cm) from the floor.
Rule R101
R101       *ROBOT PERIMETER must be fixed. The ROBOT (excluding BUMPERS) must have a ROBOT PERIMETER, contained within the BUMPER ZONE and established while in the ROBOT’S STARTING CONFIGURATION, that is comprised of fixed, non-articulated structural elements of the ROBOT. Minor protrusions no greater than 0.25in (0.64cm) such as bolt heads, fastener ends, weld beads, and rivets are not considered part of the ROBOT PERIMETER.