49 CFR § 587.13 - General description.

---
identifier: "/us/cfr/t49/s587.13"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 587.13 - General description."
title_number: 49
title_name: "Transportation"
section_number: "587.13"
section_name: "General description."
chapter_name: "NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "587"
part_name: "DEFORMABLE BARRIERS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 322, 30111, 30115, 30117, and 30166; delegation of authority at 49 CFR 1.50."
regulatory_source: "55 FR 45779, Oct. 30, 1990, unless otherwise noted."
cfr_part: "587"
---


# 587.13 General description.

The offset deformable barrier is comprised of two elements: a fixed rigid barrier and a deformable face (Figure 1). The fixed rigid barrier is adequate to not deflect or displace more than 10 mm during the vehicle impact. The deformable face consists of aluminum honeycomb and aluminum covering.