Hewett & Associates

Corporate Headquarters: P.O. Box 463 Keedysville, Md. 21756

        1-800-776-5069  ; FAX:  301-432-4668       

---

 

SPEED LOSS FROM SKID

In considering the following chart, remember these results are approximations and represent energy loss, not necessarily actual original speed. It would represent the acutal speed providing the vehicle skid to a stop without making any impact. In any event, the speed loss would present a MINIMUM original speed. There are other variables such as grade, surface type etc. These are base on a level blacktop roadway.
 
 

Skid Length in feet	Snow Covered Road	Wet Road	Dry Road
20	13 mph	17 mph	22 mph
30	16 mph	21 mph	27 mph
40	19 mph	24 mph	31 mph
50	21 mph	27 mph	34 mph
60	23 mph	30 mph	38 mph
70	25 mph	32 mph	41 mph
80	27 mph	35 mph	44 mph
90	28 mph	37 mph	46 mph
100	30 mph	39 mph	49 mph