§392.14 imposes a two-step duty: first, exercise extreme caution when hazardous conditions adversely affect visibility or traction; second, discontinue operation when conditions become sufficiently dangerous. The rule's enforcement bite shows up after a crash — officers and litigators look back at whether the driver kept moving in conditions that should have parked the truck.
Severity weight
Severity weight 5 in the Unsafe Driving BASIC. The post-crash discoverability of §392.14 makes it a frequent finding even when the citation issues weeks after the event, via FMCSA's accident review process.
How to prevent it
- Issue and document a written adverse-weather policy. Drivers should know they have authority to shut down, and pay should not penalize that choice.
- Track NOAA advisories at the dispatch level. A weather-driven layover paid by the carrier is cheaper than a §392.14 citation plus crash exposure.
- Coach drivers to articulate "the road conditions that caused me to stop" in the duty status remark — the documentation matters at audit.
How Roadworthy HQ helps
A §392.14 citation lands on the driver. Roadworthy HQ does not record individual violation codes, pull CSA or SMS scores, or track coaching. What it keeps is the driver file an auditor opens next: the annual MVR and the §391.25 annual review, each with reminders 60, 30, and 7 days out, and the qualification-file documents with their retention periods enforced. If the citation came from a roadside inspection, log that inspection on the vehicle (date, state, level, driver, number of violations, out-of-service or not).