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Thanks to Eddie's HP 32SII: Stopping Sight Distance http://www.hpmuseum.org/forum/thread-1075.html

Stopping Sight Distance
50G:

'SHSSD'

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\<< Y "SPEED" \->TAG X "GRADE" \->TAG X .32 * 11.2 + INV 1.075 * Y SQ * Y 55. * 15. / + "SSD" \->TAG
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