Transportation Movement Calculator

This calculator plans truck movement of bulk cargo, from the number of truck loads required through convoy serials and days to complete. Truck loads is cargo tonnage divided by per-truck payload capacity, rounded up (line 20), and cargo tonnage and truck capacity move that figure -- and Trucks required, which mirrors it at the default settings -- by an identical, opposite-signed amount: more cargo raises truck loads, more capacity per truck lowers it, at the same rate. Distance, average speed, and turnaround time never appear in the Truck loads formula at all (line 20) -- they only affect Round trip (hrs) and, through it, how many trips a single truck can complete per day (line 23), which in turn decides whether more than one truck load fits into a single truck's day.

Round trip time is one-way travel time doubled plus turnaround time (line 17), and average speed and distance move it in opposite directions: a faster average speed shortens the round trip while a longer distance lengthens it, at close to the same rate at the default 200-mile, 25-mph settings. Because Trips/truck/day is computed with Math.floor (line 23), a round trip that is even slightly over a clean divisor of 24 hours drops a truck to fewer trips per day -- a threshold effect that a small change in speed or distance near that boundary can trigger even though neither one changes Truck loads. Trucks required and Days to complete answer two different questions and should not be confused: Trucks required is the fleet that would clear the movement in a single day, while Days to complete divides the truck loads by the Trucks available you actually enter, times their trips per day (line 31) -- so halving the trucks you can commit roughly doubles the days, and entering a fleet at or above Trucks required is what makes Days to complete read 1.