§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
§392.14 findings link to the driver's record, to the dispatch context if recorded, and to the §385.319(c) corrective-action documentation. The carrier policy and the driver's acknowledgment are retained in the audit binder under §391.51.