Vehicle decelerating or arresting surfacings or surface arrangements

Official title: {Vehicle decelerating or arresting surfacings or surface arrangements, e.g. arrester beds (road surface configuration or surface arrangements for enforcing reduced speed, e.g. speed-control humps E01F9/529); Escape roads, e.g. for steep descents, for sharp bends}

E01C9/007 (Vehicle decelerating or arresting surfacings or surface arrangements) appears on 37 US grants and 40 published applications in this corpus.