Category 9 0919 group.
Anti-collision guardrails belong to the 0919 group, Category 9 of the trademark classification. According to statistics from Roadmark.com, there are 40 trademarks registered for anti-collision guardrails.
Reversing anti-collision radar belongs to the 0920 group, Category 9 of the trademark classification. According to the statistics of Roadmark.com, there are 9 registered trademarks of reversing anti-collision radar.