Calculate Driver Braking
1. Driver Reaction Time* (tr): seconds
2. Yellow Light Duration (ty): seconds
3. Speed (v):
4. Road Grade (Gr):
Gr is negative (-) for Downhill.
5. Stop-Clear** Lines (di):
* Average reaction time for all drivers (measured in a controlled environment ) is 2.3 sec.
** Clear line is the position a vehicle must be at/past when light changes red.
Some States - Vehicle cannot enter intersection when/after light changes red.

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Driver Braking Calculator

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