Federal Rules That Decide a Truck Case
Alcohol and the four-hour rule
A commercial driver cannot drink within four hours of going on duty and cannot show any measurable alcohol concentration while on duty. The carrier commits its own violation by letting someone work who appears to have been drinking in that window (49 CFR 392.5).
Drugs and impairing medication
Being on duty while using Schedule I drugs, amphetamines or narcotics is prohibited, along with any substance that makes driving unsafe, and the carrier may not permit it (49 CFR 392.4). A prescription is an exception only where a medical practitioner has confirmed the medication will not affect safe driving.
Reading the door to find the carrier
Both sides of a commercial vehicle must carry the operating carrier's name and USDOT number, legible from 50 feet, and a leased truck running under another company's name has to add "operated by" with that carrier's details (49 CFR 390.21). On these arterials the door is often the only durable record of who is actually answerable, so photograph it before the truck moves.
Coverage minimums rise with the load
Interstate general freight requires at least $750,000 in liability coverage. Hazardous loads require more, $1,000,000 for many of them and $5,000,000 for certain bulk hazardous substances (49 CFR 387.9). Tankers running I-215 sit in those higher tiers. Our Utah truck accident claims guide goes further.
If the truck does not stop
Uninsured motorist coverage can respond when a truck causes a crash and keeps going. Where it never made contact, Utah Code § 31A-22-305(6) demands clear and convincing proof beyond your own account that the vehicle existed, so whatever name, number or photo you captured carries real weight.