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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 grade–mphps
Vinitial (fps)–fps
Vfinal (fps)–fps
Reaction distance–ft
Braking distance–ft
Safety distance–ft
Total distance–ft
Time reaction–s
Time for braking–s
Time for safety–s
Total time–s
mph↔fps uses 22/15 (≈1.4667). Grade effect uses 21.936851288475·(grade/100) mphps, matching the sheet’s formulas.