49 CFR §214.518
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
On or after March 1, 2004, a roadway worker, other than the machine operator, is prohibited from riding on any on-track roadway maintenance machine unless a safe and secure position for each roadway worker on the machine is clearly identified by stenciling, marking, or other written notice.