Trucks, trailers and cars, explained by people who love big machines
Plain-English guides to how semi trucks, trailers and everyday cars actually work, what it takes to drive for a living, the record-breaking machines that make headlines, and the habits that keep everyone safe on the road. No sales pitch, just the useful stuff.
Trucks explained
How a semi truck is put together, what the weight classes mean, and how the engine, gearbox and brakes move and stop 80,000 pounds.
TrucksDiesel engine basics for trucksDiesels squeeze air until it is hot enough to ignite fuel without a spark. That simple idea gives trucks huge torque, long engine life and good fuel economy.
TrucksHow air brakes workHeavy trucks stop with compressed air, not brake fluid. Here is how the compressor, tanks, chambers and spring brakes work together, and why the system fails safe.
TrucksJake brakes and engine brakingThat loud rapid-fire roar from a truck coming down a hill is the engine brake at work. Here is how it slows the truck without wearing out the brakes, and why some towns restrict it.
TrucksSemi truck anatomy, part by partA tractor-trailer is two vehicles joined at a single pin. Here is what every major part does, from the steer axle to the trailer's landing gear.
TrucksSleeper cab vs day cabSleeper cabs are rolling apartments for drivers who are out for days or weeks. Day cabs are lighter and nimbler for drivers who sleep at home. Here is how they compare.
TrucksTruck classes 1 to 8 explainedIn the US, trucks are grouped into eight classes by gross vehicle weight rating. Here is what each class means, with examples and a full table.
TrucksHow air brakes workHeavy trucks stop with compressed air, not brake fluid. Here is how the compressor, tanks, chambers and spring brakes work together, and why the system fails safe.TrucksJake brakes and engine brakingThat loud rapid-fire roar from a truck coming down a hill is the engine brake at work. Here is how it slows the truck without wearing out the brakes, and why some towns restrict it.TrucksSemi truck anatomy, part by partA tractor-trailer is two vehicles joined at a single pin. Here is what every major part does, from the steer axle to the trailer's landing gear.TrucksSleeper cab vs day cabSleeper cabs are rolling apartments for drivers who are out for days or weeks. Day cabs are lighter and nimbler for drivers who sleep at home. Here is how they compare.TrucksTruck classes 1 to 8 explainedIn the US, trucks are grouped into eight classes by gross vehicle weight rating. Here is what each class means, with examples and a full table.Trailers & loads
Dry vans, reefers, flatbeds, lowboys, tankers and more, plus how loads are tied down, how weight limits work and what makes a load oversize.
TrailersCar haulers: how vehicles get to the dealershipCar haulers fit a parking lot's worth of vehicles onto one rig. Here is how stinger and high-mount carriers work, the jobs they do and why the work takes real skill.
TrailersCargo securement basicsThe physics and the general rules behind tying down a load, from how many straps a piece of freight needs to how often drivers must check them.
TrailersDry vans and reefersThe enclosed box trailers that move most of the goods on store shelves. How they are built, how they are loaded, and what makes refrigerated freight different.
TrailersFlatbed and step deck trailersOpen-deck trailers haul steel, lumber, machinery and anything too big for a box. Here is how flatbeds and step decks compare and what flatbed drivers actually do.
TrailersIntermodal containers and drayageThe steel shipping container changed world trade. Here is how containers move between ships, trains and trucks, and what drayage drivers do at ports and rail yards.
TrailersLowboy and RGN trailersWhen a bulldozer or a transformer needs to travel, it rides on a lowboy. Here is how lowboys and removable gooseneck trailers work and why heavy haul is its own world.Trucking life & careers
CDL classes and endorsements, hours-of-service basics, electronic logs, company driver vs owner-operator, and how freight, load boards and rates work.
CareersCDL classes A, B and C explainedWhat each commercial driver's license class lets you drive, how the weight thresholds work, and the general steps to get one in the US.CareersCDL endorsements and restrictionsH, N, P, S, T and X explained, plus the restriction codes that can limit what you drive. Which endorsements open which jobs.CareersElectronic logging devices (ELDs)ELDs replaced paper logbooks for most US truck drivers. What they record, how they work, who is exempt and what drivers should know about using them.CareersFreight, dispatch and load boardsWho is who in the freight world, from shippers and brokers to dispatchers and load boards, and how a load gets from a posting to a delivered, paid invoice.
CareersHours-of-service basicsThe federal rules that limit how long truck drivers can drive and work, explained in plain English: the 11-hour, 14-hour, 30-minute and 60/70-hour limits.
CareersOwner-operator vs company driverCompany drivers get a paycheck and the carrier's truck. Owner-operators run a small business with bigger revenue and bigger risks. Here is an honest comparison.Car guides
How engines work, EV vs hybrid vs gas, maintenance schedules, tires, brakes, warning lights and a used-car buying checklist.
CarsCar maintenance and warning lightsThe basic maintenance every car needs, how to check tires, oil and fluids yourself, and what the most common dashboard warning lights mean and how urgent they are.CarsEV vs hybrid vs gasHow battery electric, plug-in hybrid, hybrid and gasoline cars differ in how they work, how you refuel or charge, maintenance and who each type suits best.CarsHow car engines workThe four-stroke cycle in plain English, the main parts of a gasoline engine, cylinder layouts, turbochargers and the difference between horsepower and torque.
Record-breakers & famous machines
The biggest trucks ever built, mining giants, Australian road trains, the land speed record and the engines that made history.
RecordsGiant machines of mining and industryMeet the biggest wheeled and tracked machines ever built, from 450-tonne haul trucks to bucket-wheel excavators longer than a football field, and learn why they are so big.RecordsIconic engines that made historyThe car and truck engines enthusiasts still talk about, from the Ford flathead V8 and Chevy small-block to the Volkswagen flat-four, Mazda rotary and legendary truck diesels.
Road safety
Truck blind spots, sharing the road with big rigs, stopping distances, winter driving and runaway truck ramps.
SafetyRunaway truck rampsWhat runaway truck ramps are, how gravel arrester beds stop a truck with failed brakes, how drivers prevent brake fade on long grades, and why car drivers must never use or block them.SafetySharing the road with big trucksTruck blind spots (the No-Zones), why trucks make wide turns, how to pass safely, and the simple habits that keep car drivers and truck drivers out of each other's way.SafetyStopping distances explainedWhy a loaded truck needs far more room to stop than a car, the four parts of total stopping distance, how speed and road conditions multiply it, and safe following distances.SafetyWinter driving for trucks and carsHow to prepare a vehicle for winter, drive on snow and ice, handle skids and jackknife risk, use tire chains, and know when to park and wait out a storm.
Reference
The trucker glossary, a pre-trip inspection checklist and answers to the most common truck and car questions.
ReferencePre-trip inspection checklistA tickable pre-trip inspection checklist for tractor-trailers, following the order taught in CDL training, with the key air brake checks. Progress is saved in your browser.ReferenceTruck and car FAQQuick answers to the most common questions about trucks, trucking careers and everyday cars, from how much a semi weighs to how old you must be to drive one.ReferenceTrucker glossaryOver 70 trucking terms explained in one plain-English line each, from air brakes and bobtail to reefer, deadhead and the 14-hour rule.
Watch on YouTube
Giant trucks, record-breaking cars and wild machine stories, one Short at a time.
Gear for people who respect the load
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