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> so let's figure out what would fix it. For one thing an 18 wheeler has 10 brakes, not 18. So that's an obvious thing to fix. > Why would it affect trucks an

• Dylan16807 3y ago
  > For one thing an 18 wheeler has 10 brakes, not 18. So that's an obvious thing to fix. That sounds like it would make a huge difference, yes. > The weight of the truck acts as an acceleration force when going downhill. The tire friction of a car and truck is the same - but then the truck has extra force trying to accelerate the vehicle when it's downhill. So does the weight of the car. I don't understand this logic. Every pound that's giving you acceleration is also giving you extra tire friction. A car and a truck should theoretically lose the same number of meters per second squared of stopping force when going down a hill. If the truck started with weaker brakes then it loses a bigger percentage of stopping force, exacerbating the already-existing problem, but if you find a truck and a car with equal stopping distance on flat ground then they should have equal stopping distance on a slope, shouldn't they?