§FMCSR.com
Current textIn force on June 1, 2015Source: annual CFR editions 2014–2016

§ 393.203 Cab and body components.

Current wording, in the annual edition revised as of Oct. 1, 2014.

govinfo, 2014 edition ↗
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2014 edition's wording. An amendment that took effect between Oct. 1, 2014 and June 1, 2015 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
What changedOct. 1, 1996 wording → Oct. 1, 2014 wording (current)+16 added−1 removedHide

(a) The cab compartment doors or door parts used as an entrance or existexits shall not be missing or broken. Doors shall not sag so that they cannot be properly opened or closed. No door shall be wired shut or otherwise secured in the closed position so that it cannot be readily opened. Exception: When the vehicle is loaded with pipe or bar stock that blocks the door and the cab has a roof exit.
(b) Bolts or brackets securing the cab or the body of the vehicle to the frame shall not be loose, broken, or missing.
(c) The hood must be securely fastened.
(d) All seats must be securely mounted.
(e) The front bumper must not be missing, loosely attached, or protruding beyond the confines of the vehicle so as to create a hazard.
[53 FR 49402, Dec. 7, 1988, as amended at 78 FR 58484, Sept. 24, 2013]

49 CFR § 393.203 — Cab and body components.. Text in force on June 1, 2015. This wording effective October 1, 2014 to present. Source: govinfo, 2014 edition, https://www.govinfo.gov/app/details/CFR-2014-title49-vol5/CFR-2014-title49-vol5-sec393-203. Retrieved from FMCSR.com, https://fmcsr.com/reg/393.203?asof=2015-06-01, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) The cab compartment doors or door parts used as an entrance or exits shall not be missing or broken. Doors shall not sag so that they cannot be properly opened or closed. No door shall be wired shut or otherwise secured in the closed position so that it cannot be readily opened. Exception: When the vehicle is loaded with pipe or bar stock that blocks the door and the cab has a roof exit.

(b) Bolts or brackets securing the cab or the body of the vehicle to the frame shall not be loose, broken, or missing.

(c) The hood must be securely fastened.

(d) All seats must be securely mounted.

(e) The front bumper must not be missing, loosely attached, or protruding beyond the confines of the vehicle so as to create a hazard.

[53 FR 49402, Dec. 7, 1988, as amended at 78 FR 58484, Sept. 24, 2013]

Amendment history

3 distinct wordings on file since Oct. 1, 1996
  1. Oct. 1, 2014 → presentannual editions 2014–2016diff vs. previousviewing
    [53 FR 49402, Dec. 7, 1988, as amended at 78 FR 58484, Sept. 24, 2013]
  2. Oct. 1, 2013 → Oct. 1, 2014annual edition 2013diff vs. previous
    [53 FR 49402, Dec. 7, 1988, as amended at 78 FR 58484, Sept. 24, 2013]
  3. Oct. 1, 1996 → Oct. 1, 2013annual editions 1996–2012

A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.