The Traffic Accident Reconstruction Origin -Article-
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The Traffic Accident Reconstruction Origin -Article-
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Table 1. Test Data and Resulting Drag Factors |
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TEST CONDITIONS: WET SURFACE |
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Test No |
Speed at Lockup |
Skid Distance |
Timer No 1 |
Timer No 2 |
Timer No 3 |
m |
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Radar |
Speedometer |
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|
(mph) |
(mph) |
(feet) |
(sec) |
(sec) |
(sec) |
(distance) |
(time) |
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1 |
30.0 |
*** |
64.4 |
2.71 |
2.79 |
2.75 |
0.467 |
0.497 |
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2 |
34.0 |
*** |
76.3 |
2.65 |
2.64 |
2.80 |
0.506 |
0.574 |
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3 |
31.0 |
*** |
62.2 |
2.76 |
2.84 |
2.67 |
0.516 |
0.512 |
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4 |
31.0 |
*** |
67.3 |
2.86 |
2.82 |
2.97 |
0.477 |
0.490 |
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5 |
32.0 |
*** |
63.5 |
2.80 |
2.94 |
3.00 |
0.539 |
0.500 |
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6 |
42.0 |
45 |
108.2 |
3.73 |
3.74 |
3.76 |
0.545 |
0.511 |
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7 |
40.0 |
45 |
118.4 |
4.08 |
3.91 |
3.95 |
0.451 |
0.458 |
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8 |
41.0 |
45 |
120.1 |
3.77 |
3.89 |
3.91 |
0.468 |
0.484 |
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9 |
41.0 |
44 |
118.3 |
3.85 |
3.84 |
3.82 |
0.475 |
0.487 |
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10 |
40.0 |
45 |
114.4 |
3.88 |
3.84 |
3.92 |
0.467 |
0.470 |
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11 |
51.0 |
54 |
181.3 |
4.88 |
4.88 |
4.85 |
0.479 |
0.477 |
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12 |
53.0 |
54 |
192.2 |
5.00 |
4.93 |
5.05 |
0.488 |
0.483 |
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13 |
53.0 |
55 |
203.9 |
5.25 |
5.07 |
5.27 |
0.460 |
0.465 |
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14 |
54.0 |
55 |
208.4 |
5.39 |
5.22 |
5.42 |
0.467 |
0.460 |
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15 |
58.0 |
56 |
201.6 |
5.27 |
5.18 |
5.19 |
0.557 |
0.507 |
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16 |
75.0 |
74 |
327.7 |
7.34 |
6.89 |
*** |
0.573 |
0.480 |
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17 |
71.0 |
75 |
366.8 |
7.15 |
6.88 |
7.11 |
0.459 |
0.459 |
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18 |
73.0 |
74 |
348.4 |
6.60 |
6.53 |
*** |
0.511 |
0.506 |
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19 |
70.0 |
73 |
350.0 |
6.94 |
6.84 |
7.00 |
0.468 |
0.460 |
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20 |
73.0 |
75 |
409.6 |
7.28 |
7.18 |
7.43 |
0.435 |
0.456 |
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21 |
71.0 |
74 |
355.3 |
6.99 |
6.25 |
6.83 |
0.474 |
0.483 |
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23 |
32.0 |
35 |
71.4 |
2.89 |
2.65 |
2.96 |
0.479 |
0.514 |
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24 |
32.0 |
35 |
79.1 |
2.97 |
2.81 |
3.00 |
0.432 |
0.498 |
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25 |
30.0 |
34 |
68.8 |
2.86 |
2.85 |
2.91 |
0.437 |
0.476 |
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26 |
31.0 |
35 |
71.9 |
3.29 |
2.96 |
2.95 |
0.446 |
0.460 |
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27 |
31.0 |
35 |
78.4 |
2.94 |
2.81 |
3.04 |
0.409 |
0.482 |
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28 |
41.0 |
45 |
132.7 |
4.02 |
4.07 |
4.06 |
0.42 |
0.46 |
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29 |
41.0 |
45 |
133.3 |
3.91 |
3.95 |
4.08 |
0.42 |
0.47 |
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30 |
40.0 |
44 |
118.3 |
3.76 |
3.75 |
3.85 |
0.45 |
0.48 |
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31 |
40.0 |
45 |
129.7 |
3.83 |
3.91 |
3.97 |
0.41 |
0.47 |
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32 |
48.0 |
54 |
179.4 |
4.67 |
4.72 |
4.73 |
0.43 |
0.46 |
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33 |
52.0 |
55 |
204.0 |
5.00 |
5.03 |
*** |
0.44 |
0.47 |
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34 |
52.0 |
55 |
202.0 |
5.07 |
4.98 |
5.15 |
0.45 |
0.47 |
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35 |
53.0 |
55 |
204.0 |
5.11 |
5.06 |
5.02 |
0.46 |
0.48 |
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TEST CONDITIONS: DRY SURFACE |
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37 |
32.0 |
35 |
47.5 |
2.32 |
2.08 |
2.08 |
0.72 |
0.67 |
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38 |
33.0 |
35 |
44.7 |
2.19 |
2.13 |
2.16 |
0.81 |
0.70 |
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39 |
34.0 |
35 |
49.1 |
2.01 |
2.19 |
2.09 |
0.79 |
0.74 |
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40 |
30.0 |
35 |
51.0 |
2.24 |
2.16 |
2.29 |
0.59 |
0.61 |
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41 |
68.0 |
73 |
216.9 |
4.42 |
4.32 |
4.20 |
0.71 |
0.72 |
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42 |
68.0 |
73 |
231.1 |
5.05 |
4.71 |
4.07 |
0.67 |
0.67 |
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