CDL · Medical Cards · Hours of Service
2.5 hours · 5 modules · for Drivers · Foremen · Dispatch
A driver put out of service takes a truck and a crew with him. This course covers what triggers CDL requirements, how the DOT medical card works, hours of service including the short-haul exception, and the inspection items that most often shut a paving truck down.
A Commercial Driver's License is required based on the vehicle, not the job title. Federal rules define a Commercial Motor Vehicle (CMV) for CDL purposes as any of the following:
• A single vehicle with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more
• A combination with a Gross Combination Weight Rating of 26,001 pounds or more where the towed unit is over 10,000 pounds GVWR
• A vehicle designed to transport 16 or more passengers including the driver
• Any size vehicle transporting hazardous materials requiring placards
RATING, NOT ACTUAL LOAD. This is the point that catches contractors out. A truck with a 26,001 lb GVWR needs a CDL-qualified driver even when it is running empty. The manufacturer's rating on the door jamb governs, not what is on the scale today.
CLASSES:
• Class A — combination vehicles at or above 26,001 lbs GCWR with a towed unit over 10,000 lbs
• Class B — single vehicles at or above 26,001 lbs GVWR
• Class C — smaller vehicles carrying placarded hazmat or 16+ passengers
Watch the trailer. A pickup under 26,001 lbs towing a heavy equipment trailer can push the combination over the threshold and into Class A territory. Crews move skid steers and rollers on trailers constantly — this is the most commonly missed CDL trigger in construction.
ENDORSEMENTS may be required: tanker (N) for liquid in bulk, hazmat (H) for placarded loads. Tack and emulsion hauling can trigger these depending on quantity and packaging.
CONSEQUENCES of running without proper licensure: the driver is placed out of service, the company is cited, and insurance coverage for an incident can be jeopardised — which is the part that can end a company.
Interstate CMV drivers must be medically certified by a examiner listed on the FMCSA National Registry. The result is the Medical Examiner's Certificate — the medical card.
DURATION: a certificate is valid for a maximum of 24 months. An examiner may issue a shorter certification — commonly one year or less — when a condition needs monitoring, such as controlled hypertension, diabetes managed with insulin, or sleep apnea under treatment. Many drivers therefore hold cards well short of two years, and assuming everyone is on a 24-month cycle is how a crew loses a driver unexpectedly.
WHAT THE EXAM COVERS: vision, hearing, blood pressure, urinalysis, and a review of medical history including cardiovascular, neurological, respiratory and musculoskeletal conditions, plus current medications.
DISQUALIFYING AND CONDITIONAL ITEMS include uncontrolled hypertension, certain cardiac conditions, epilepsy or seizure disorders, and untreated sleep apnea. Many are manageable with treatment and documentation — the failure mode is usually a driver who did not bring documentation to the exam, not a driver who is genuinely unfit.
THE WORDEN STANDARD — ZERO-DOWNTIME DOT MEDICAL: crew scheduling is built so a medical expiry never takes a driver off the board unexpectedly. That means tracking every card's expiry date, scheduling the re-exam well in advance of expiry, and treating an approaching expiry as a scheduling constraint like any other.
An expired medical card means the driver is not qualified. The truck does not roll. On a paving day that can idle an entire crew and a plant order — which is why this is tracked as a company standard and not left to the individual.
Drivers must also self-report to their employer and licensing state any conviction for a traffic violation (other than parking) within the required timeframe, and any licence suspension immediately.
Hours of Service rules limit driving time to reduce fatigue crashes. For property-carrying drivers the core limits are:
• 11-HOUR DRIVING LIMIT — a maximum of 11 hours driving after 10 consecutive hours off duty
• 14-HOUR WINDOW — driving is not permitted beyond the 14th consecutive hour after coming on duty. This window does not pause for breaks, fuel, or waiting at the plant. Once it starts, it runs.
• 30-MINUTE BREAK — required after 8 cumulative hours of driving time without at least a 30-minute interruption of driving status
• 60/70-HOUR LIMIT — 60 hours in 7 consecutive days, or 70 hours in 8 consecutive days, depending on whether the carrier operates every day of the week
• 34-HOUR RESTART — the weekly limit may be reset with 34 consecutive hours off duty
The 14-hour window is what catches paving crews. A driver who comes on duty at 5:00 AM cannot drive after 7:00 PM, no matter how much of the 11 driving hours remains unused. Long waits at the plant burn the window without accumulating driving time.
THE SHORT-HAUL EXCEPTION is the one most relevant to local paving work. A driver may be exempt from the electronic logging device requirement if they:
• Operate within a 150 air-mile radius of their normal work reporting location
• Return to that reporting location and are released from duty within 14 consecutive hours
• Do not exceed the driving limits
Under the exception the carrier must still maintain accurate time records showing the start and end of the duty day and total hours on duty. Records must be retained per the regulation.
IMPORTANT: the short-haul exception removes the ELD/logbook requirement. It does not remove the driving limits, and it does not remove the requirement to keep records. Losing the exception on a single day — an out-of-radius job, or a day that runs past 14 hours — puts that day's log requirements back in force.
PERSONAL CONVEYANCE and yard moves have specific rules. Do not guess at duty status; ask dispatch.
A driver is required to be satisfied the vehicle is in safe operating condition before driving, and to review the last driver vehicle inspection report where one was required.
The pre-trip is a legal obligation and the cheapest insurance available. Items that most often place a construction truck out of service:
BRAKES — the single largest category of out-of-service violations. Check for air leaks, adequate pressure build, proper pushrod stroke, and no cracked or missing components. Air brake system checks are part of the required routine on air-braked vehicles.
TIRES — tread depth, sidewall damage, proper inflation, and no exposed cord or belt material. Flat or unsafe tires are an immediate out-of-service condition.
LIGHTS AND REFLECTORS — all required lamps working, lenses intact, reflective tape present and clean. Asphalt film over lights and reflective tape is common on paving trucks and is a citable defect.
LOAD SECUREMENT — equipment on a trailer must be secured per the cargo securement rules, with adequate tiedowns for the weight and, for heavy equipment, securement at the required points. Loose equipment is both a violation and a lethal hazard.
COUPLING DEVICES — fifth wheel, pintle hooks, safety chains. Check every connection every time.
DOCUMENTATION carried in the cab: current licence with proper class and endorsements, current medical certificate, registration, insurance, and hours records as applicable.
DEFECTS FOUND: report them. A driver who documents a defect and takes the truck out of service is doing the job correctly. A driver who runs a known defect transfers liability to himself and to the company, and if an incident follows, that written record will be found.
Post-trip inspection reports are required where the regulation applies, and defects must be certified as repaired before the vehicle is dispatched again.
CDL drivers in safety-sensitive functions are subject to a federally mandated testing program. Employers must have a program in place; there is no small-company exemption.
REQUIRED TESTING SITUATIONS:
• Pre-employment — before performing any safety-sensitive function
• Random — unannounced, at the federally set annual rates
• Post-accident — required under specific accident criteria involving a fatality, an injury requiring immediate medical treatment away from the scene, or disabling vehicle damage combined with a citation
• Reasonable suspicion — based on specific, contemporaneous, articulable observations by a trained supervisor
• Return-to-duty and follow-up — after a violation, managed through the return-to-duty process
SUPERVISOR TRAINING: supervisors who may make reasonable-suspicion determinations must receive training on the symptoms of drug use and alcohol misuse. Without that training, a reasonable-suspicion test cannot be properly ordered.
ALCOHOL PROHIBITIONS: a driver may not perform safety-sensitive functions with an alcohol concentration at or above the prohibited level, may not use alcohol within the specified period before performing safety-sensitive functions, and may not use alcohol for the specified period after an accident where post-accident testing is required.
THE FMCSA CLEARINGHOUSE is a federal database of drug and alcohol program violations. Employers must query it before hiring a CDL driver and annually for current drivers. Drivers must register and grant consent for full queries. A violation recorded in the Clearinghouse prohibits a driver from performing safety-sensitive functions until the return-to-duty process is completed.
REFUSAL TO TEST is treated the same as a positive result. That includes failing to appear, leaving the collection site, and failing to provide a sufficient specimen without a valid medical explanation.
A driver with a prohibited status who is allowed to drive exposes the company to severe penalties and, in a serious incident, to punitive liability. Verify status before dispatch, not after.
Answer before you open the reveal — that is the whole point.