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LRT Braking Calculator

Mobile-friendly web version of the “Rev 1.0” worksheet. Editable inputs are the red cells.

Inputs

Results

Total Distance
ft
Total Time
s
Breakdown & intermediate values
ItemValueUnits
Reaction Time4sec
Overhang (2×)30ft
Safety Factor0.3fraction
Brake Rate (fps²)fps²
Brake Rate corrected for grademphps
Vinitial (fps)fps
Vfinal (fps)fps
Reaction distanceft
Braking distanceft
Safety distanceft
Total distanceft
Time reactions
Time for brakings
Time for safetys
Total times
mph↔fps uses 22/15 (≈1.4667). Grade effect uses 21.936851288475·(grade/100) mphps, matching the sheet’s formulas.