Skills TestModule 3 · Cargo, Weight and the Law of Physics
Week 16 of 52
Bridge formula and axle spacing: why the law cares about distance between axles
CFR23 CFR 658.17AAMVAsection 3ClassA
The seven videos
- MondayLesson 1 of 5
Bridge formula and axle spacing: axles are moving point loads on a beam
Covers the required minimum, then goes past it.
- TuesdayLesson 2 of 5
Why a short wheelbase is more damaging than the same weight on a long one
Covers the required minimum, then goes past it.
- WednesdayLesson 3 of 5
Why "more axles" isn't the real lever: spacing is
Covers the required minimum, then goes past it.
- ThursdayLesson 4 of 5
Where the bridge formula actually came from: not a collapse, a negotiated trade
Covers the required minimum, then goes past it.
- FridayLesson 5 of 5
Not arbitrary: the full arc, and one honest gap in the model
Covers the required minimum, then goes past it.
- SaturdayTips from the seat
Tips from the seat, on this week’s subject. Not written yet.
- SundayCase law and war stories
The real story behind the bridge formula: and the collapse everyone assumes caused it, but didn't