Accident Investigation Calculator
Reaction Times and Walking Speeds
Reaction times: TRRL Laboratory Report 1004, 1981
Human factors and driving performance, A. R. Quimby and G. R. Watts
| Age group |
15th percentile |
Median |
85th percentile |
| Under 25 |
1.76s |
1.88s |
2.00s |
| 25-34 |
1.54s |
1.62s |
1.70s |
| 35-44 |
1.45s |
1.52s |
1.59s |
| 45-54 |
1.33s |
1.40s |
1.47s |
| 55-64 |
1.67s |
1.86s |
2.05s |
| 65+ |
1.69s |
1.96s |
2.15s |
Walking Speeds: Impact, 1, 1, 5, 1990
Walking speeds m/s. Eubanks, J. J. and Herms, B. F.
| Age |
Sample size |
15th percentile |
Median |
85th percentile |
| 2 |
14 |
0.76 |
0.85 |
1.04 |
| 3 |
49 |
0.79 |
1.07 |
1.31 |
| 4 |
63 |
0.98 |
1.25 |
1.55 |
| 5 |
59 |
1.13 |
1.37 |
1.77 |
| 6 |
76 |
1.28 |
1.46 |
1.89 |
| 7 |
72 |
1.25 |
1.52 |
1.92 |
| 8 |
64 |
1.31 |
1.55 |
1.95 |
| 9 |
61 |
1.37 |
1.58 |
1.80 |
| 10 |
51 |
1.40 |
1.64 |
1.92 |
| 11 |
24 |
1.40 |
1.58 |
1.83 |
| 5-9 |
26 |
1.40 |
1.83 |
2.41 |
| 10-14 |
37 |
1.37 |
1.68 |
2.10 |
| 15-19 |
47 |
1.46 |
1.64 |
2.07 |
| 20-24 |
65 |
1.40 |
1.61 |
1.86 |
| 25-34 |
70 |
1.46 |
1.61 |
1.98 |
| 35-44 |
67 |
1.34 |
1.61 |
1.95 |
| 45-54 |
73 |
1.31 |
1.52 |
1.74 |
| 55-64 |
90 |
1.28 |
1.46 |
1.68 |
| 65+ |
67 |
1.07 |
1.28 |
1.46 |
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