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Calcimator

Grade Crossing Warning Calculator

Calculate highway-rail grade crossing warning time, approach circuit distance, and clearance time per MUTCD and FRA requirements.

Inputs

mph
ft
ft
mph

Results

Required warning time

25.3 sec

Approach circuit distance2,226 ft
Approach distance0.42 miles
Vehicle clearance time10.3 sec
Gate descent time10 sec
Total crossing width74 ft
Island circuit length94 ft
CWT device recommended1
Traffic signal preemption40 sec
Advance warning sign distance250 ft
Max Warning Time25.3
How to Use This Calculator
  1. Enter Maximum train speed, Crossing width, and Number of tracks.
  2. Set Design vehicle length and Vehicle departure speed.
  3. Review the Required warning time (sec) result.
  4. Use Approach circuit distance (ft) and Approach distance (miles) to inform your decision.
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