Tractor Trailer Accident Lawyers in Summerville

The code sheet for South Carolina's collision report appears in the 2024 Fact Book. It gives officers a vehicle attachment field with codes for a semitrailer, a flatbed, twin trailers and a petroleum tanker. That entry shows what the tractor pulled, not who owned it. For a vehicle a carrier controls for 30 consecutive days, 49 CFR 396.3 requires maintenance records. When the carrier does not own the unit, the record must name whoever furnished it. That name can lead a lawyer to the trailer's owner.

An air-braked tractor pulling an air-braked trailer needs two ways to set the trailer's emergency brakes under 49 CFR 393.43. One must trigger on its own at a set air pressure between 20 and 45 pounds per square inch. The other is a manual control the driver can reach from the seat. A lawyer asks for the service records on both air systems, since the two units may use different shops.

Antilock Brake Rules Tied to the Build Date

Whether a unit needs antilock brakes depends on when it was built. Under 49 CFR 393.55, truck tractors made on or after March 1, 1997, need an antilock system. Air-braked trailers need one from March 1, 1998, onward. Those trailers also carry an outside lamp that signals an antilock malfunction. A tractor made on or after March 1, 2001, must relay that trailer fault to a lamp in the cab.

Automatic Adjusters and the Pushrod Stroke Limit

Air-braked commercial vehicles manufactured on or after October 20, 1994, must have automatic brake adjusters under 49 CFR 393.53. If the adjuster sits outside the brake with an exposed pushrod, an indicator must show under-adjustment. Appendix A to Part 396, the federal annual inspection standard, rejects any brake whose pushrod stroke passes its readjustment limit. Frost Law Group can request the last annual report on each unit, since the tractor and trailer each carry their own.

A truck tractor's front tires need at least 4/32 of an inch of tread under 49 CFR 393.75. Other tires need 2/32 of an inch, measured in a major groove. No tire may run with ply or belt material exposed, a tread or sidewall separation, or a flat or audible leak. The rule also bars loading a tire past the weight marked on its sidewall, outside a special state permit. Tread strips near the College Park Road exit could come from either unit, so the tire records for both matter.

A carrier must systematically inspect, repair and maintain every vehicle it controls, according to 49 CFR 396.3. Its records must show due dates, plus the date and nature of each repair. A signed driver report of a leaking brake chamber, with no repair noted, reads very differently from a clean file. Repair orders for both units deserve a request by date range, since a shop may have worked on only one.

Under 49 CFR 393.100, cargo has to stay contained or secured so it cannot leak, spill, blow or fall. It also cannot shift enough to upset the truck's stability or handling. Under 49 CFR 393.102, the securement must hold against set forces without passing its breaking strength. Those include 0.8 times the force of gravity pushing forward and 0.5 times gravity pushing sideways. In a closed van, freight braced against strong walls or other freight can meet that standard. Where tie-downs do the work, 49 CFR 393.106 sets a floor for their combined working load limit, figured by the rule's formula. That rated capacity must equal at least half the weight of the cargo they hold.

How Many Tie-Downs a Long Article Needs

Length drives the count under 49 CFR 393.110 when nothing blocks an article from sliding forward. An article no longer than 5 feet needs one tie-down if it weighs no more than 1,100 pounds. A heavier short article needs two, as does any article longer than 5 feet up to 10 feet. Past 10 feet, the count starts at two and adds one for each further 10 feet or part of 10 feet. So an unblocked 24-foot bundle of plastic pipe needs at least four. Section 393.110(d) sets these counts aside for items such as steel beams that need special fastening methods.

Cargo Checks in the First 50 Miles and Every 150 Miles

The driver must check the cargo and its securement within the first 50 miles of a trip, per 49 CFR 392.9. Rechecks follow at each change of duty status, after 3 hours of driving, or after 150 miles, whichever comes first. The rule excuses a driver of a sealed trailer with orders not to open it. It also excuses the driver when the load sits in a way that makes inspection impracticable. In those cases, a lawyer at Frost Law Group may look harder at the shipper that loaded the trailer.

Section 56-5-4100 keeps a vehicle off South Carolina highways unless its construction or loading stops the load from escaping. The section also states that nothing in it bars a damages claim. Subsection (G) exempts certain cargoes from the load rules, such as forest products, poultry and livestock, plus paper and textile products. A rig under the federal rules still faces 49 CFR 393.116, which calls for bunks or stakes that cradle the logs. Each outer log must touch at least two of those supports. Which rule set reached the truck is the first question in any cargo claim.

A semitrailer couples to the tractor at the fifth wheel, which holds the trailer's kingpin. The fifth wheel's lower half must attach firmly to the tractor's frame under 49 CFR 393.70. Its lock must hold both halves together until someone works a manual release. The federal annual inspection standard fails a fifth wheel with missing mounting fasteners or cracked welds. More than 3/8 inch of play at the pivot bracket pin also fails. If a trailer breaks free, 49 CFR 393.43 requires its brakes to set on their own and hold for at least 15 minutes. A lawyer asks who coupled the trailer and whether the driver checked the coupling before the trip.

Within 30 days of hiring, 49 CFR 391.23 requires the carrier to request the driver's record from each licensing state. That record covers the prior three years. The carrier must also look into the driver's safety history with DOT-regulated employers over those years, crashes included. Every twelve months after that, 49 CFR 391.25 calls for a fresh driving record and a review. The review gives great weight to speeding, reckless driving and impaired driving.

Before a new driver runs a rig for a carrier, 49 CFR 391.31 calls for a road test. The test uses the type of vehicle the carrier plans to assign. With combination units, it covers coupling and uncoupling, along with turning, braking, backing and parking. Under 49 CFR 391.33, a carrier may accept a valid commercial driver's license instead. That substitute does not include double or triple trailer and tank vehicle endorsements. For a driver pulling doubles, a lawyer checks which document the file actually holds.

Carriers under the federal hours rules have generally had to use electronic logging devices since December 18, 2017. In a tractor-trailer case, the log does more than count hours. Under 49 CFR 392.9, each change in duty status also triggers a cargo recheck. A duty change logged at a fuel stop in Ladson marks a point where the driver owed a look at the straps. Frost Law Group also handles wrecks involving tired truck drivers, where the same entries count against the federal driving limits.

South Carolina's collision report has its own underride and override field. The code sheet in the 2024 Fact Book lists an underride with compartment intrusion, an underride without intrusion, and an override. That entry tells a lawyer whether the trailer's rear reached into the car's passenger compartment. The next question is whether the trailer carried the guard the law requires.

Rear Impact Guards Under 49 CFR 393.86

Federal rear guard rules turn on a trailer's build date. Appendix A to Part 396 sets the annual inspection standard for those guards. A newer trailer fails if its guard is missing, loose, cracked at a weld or mounted too high. A lawyer can ask for the guard's measurements and photos before anyone repairs, scraps or sells the trailer.

Trailers Built on or After January 26, 1998

Trailers and semitrailers built on or after January 26, 1998, need a guard meeting Federal Motor Vehicle Safety Standard No. 223. The rule covers units rated at 10,000 pounds or more. The guard's horizontal bar may sit no higher than 22 inches off the ground at any point. It must reach within 4 inches of each side and sit within 12 inches of the rear. Pole trailers, pulpwood trailers, low chassis vehicles and special purpose vehicles fall outside this rule.

Older Trailers and Tall Straight Truck Bodies

An older standard covers trailers built before that date, along with straight trucks. It applies when the rear bottom edge of the body sits more than 30 inches off the ground empty. The guard's bottom then may sit no higher than 30 inches. It may sit up to 18 inches in from each side and 24 inches forward of the rear. Truck tractors themselves fall outside the rear guard rule.

South Carolina's 53-Foot Trailer Guard Requirement

Section 56-5-4070 of the South Carolina Code caps a trailer in a two-unit tractor combination at 53 feet, load included. That limit applies on the interstate system and other designated highways, and subsection (D) sets the same cap elsewhere. A 53-foot trailer must also carry a rear underride guard under the same statute. So a missing guard on I-26 may break a state statute and a federal regulation at once.

SCDPS counted 1,252 truck tractor collisions in darkness with clear or cloudy weather in 2024. Of those, 27 were fatal. When a commercial vehicle stops in a travel lane or on the shoulder for any reason other than a necessary traffic stop, 49 CFR 392.22 requires hazard flashers at once. Warning devices must go out within 10 minutes. On a divided highway such as I-26, two go 100 and 200 feet back. A third goes on the traffic side within 10 feet of the rear. It also matters whether the trailer carried the reflective sheeting or reflectors that 49 CFR 393.11 requires on wide, heavy trailers built from December 1, 1993, onward.

A jackknife happens when a trailer swings out of line and folds toward its tractor. South Carolina's report lets an officer code up to four events for each vehicle, and a jackknife has its own code. Yet SCDPS lists a jackknife as the first harmful event in only 24 collisions statewide in 2024. A trailer that folds and then strikes a car may carry a first harmful event of collision with a motor vehicle instead. Under 49 CFR 392.14, rain, fog or smoke that cuts visibility or traction calls for extreme caution and lower speed. A jackknife claim weighs the antilock records, the weather and the speed evidence together.

Under Section 56-5-2120, a right turn and its approach must stay as close as practicable to the right-hand curb or roadway edge. For a 53-foot trailer, what counts as practicable is a fact question, since a long rig may need extra room. Section 56-5-2150 bars a turn until the move is reasonably safe and requires a signal for at least the last 100 feet. Picture a rig turning right from Dorchester Road onto Ladson Road as a car slips into the gap on its right. The SCDPS Fact Book records 49 collisions at the junction of those two roads in 2024. The signal, the mirrors and the trailer's kingpin-to-axle distance all bear on fault. Section 56-5-4070 caps that distance at 41 feet on a 53-foot trailer.