APPENDIX L. TEST SURFACE PFC DATA
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TABLE L-1. TEST SURFACE PEAK FRICTIONAL COEFFICIENTS (PFC) FIRST TEST ROUND, PRETEST MEASUREMENTS, 9/30/99 |
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| Dry Surface | Wet Surface | |||||||
| Test | PFC | Test Speed, | Air Temp, | Test | PFC | Test Speed, | Air Temp, | |
| Number | Number | mph | deg F | Number | Number | mph | deg F | |
| 1 | 96.9 | 40.0 | 75 | 1 | 91.7 | 39.6 | 104 | |
| 2 | 96.7 | 39.6 | 75 | 2 | 96.0 | 39.7 | 104 | |
| 3 | 93.6 | 39.8 | 75 | 3 | 92.2 | 39.4 | 102 | |
| 4 | 99.1 | 40.0 | 75 | 4 | 98.7 | 39.1 | 102 | |
| 5 | 91.5 | 40.2 | 75 | 5 | 94.4 | 39.0 | 102 | |
| 6 | 86.6 | 40.3 | 75 | 6 | 94.9 | 39.5 | 100 | |
| 7 | 91.2 | 39.8 | 73 | 7 | 94.8 | 39.7 | 100 | |
| 8 | 93.5 | 39.3 | 73 | 8 | 92.5 | 40.0 | 100 | |
| 9 | 93.4 | 39.2 | 73 | 9 | 90.5 | 40.8 | 82 | |
| 10 | 91.7 | 39.5 | 73 | 10 | 93.9 | 40.3 | 82 | |
| 11 | 96.0 | 39.9 | 73 | 11 | 88.4 | 40.1 | 82 | |
| 12 | 96.7 | 40.1 | 75 | 12 | 90.9 | 39.9 | 82 | |
| 13 | 97.0 | 39.7 | 86 | 13 | 88.4 | 40.2 | 80 | |
| 14 | 95.4 | 39.2 | 86 | 14 | 94.2 | 40.3 | 80 | |
| 15 | 96.9 | 39.6 | 86 | |||||
| 16 | 90.7 | 40.0 | 86 | |||||
| 17 | 95.6 | 40.5 | 86 | |||||
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TABLE L-2. TEST SURFACE PEAK FRICTIONAL COEFFICIENTS (PFC) THIRD TEST ROUND, PRETEST MEASUREMENTS, 11/4/99 | ||||||||
| Dry Surface | Wet Surface | |||||||
| Test | PFC | Test Speed, | Air Temp, | Test | PFC | Test Speed, | Air Temp, | |
| Number | Number | mph | deg F | Number | Number | mph | deg F | |
| 1 | 105.3 | 40.1 | 42 | 1 | 97.1 | 41.0 | 68 | |
| 2 | 99.2 | 39.8 | 42 | 2 | 94.4 | 40.4 | 66 | |
| 3 | 94.2 | 39.7 | 42 | 3 | 101.5 | 40.7 | 42 | |
| 4 | 98.5 | 40.6 | 41 | 4 | 96.9 | 39.8 | 42 | |
| 5 | 103.1 | 39.7 | 41 | 5 | 97.3 | 40.2 | 42 | |
| 6 | 97.8 | 39.5 | 41 | 6 | 94.9 | 40.2 | 41 | |
| 7 | 100.0 | 40.6 | 41 | 7 | 92.5 | 39.9 | 41 | |
| 8 | 96.5 | 40.1 | 41 | 8 | 95.6 | 40.0 | 41 | |
| 9 | 102.1 | 40.4 | 42 | 9 | 96.4 | 40.4 | 41 | |
| 10 | 98.7 | 40.4 | 41 | 10 | 94.2 | 40.2 | 41 | |
| 11 | 99.4 | 40.7 | 41 | 11 | 93.1 | 40.0 | 41 | |
| 12 | 99.7 | 40.2 | 42 | 12 | 101.2 | 40.1 | 66 | |
| 13 | 96.2 | 39.8 | 42 | 13 | 98.5 | 39.6 | 64 | |
| 14 | 96.9 | 40.6 | 42 | 14 | 101.8 | 39.5 | 64 | |
| 15 | 94.1 | 40.0 | 42 | 15 | 101.4 | 40.0 | 64 | |
| Third Test Round, Post-test Measurements, 11/5/99 | ||||||||
| 1 | 99.3 | 39.1 | 64 | 1 | 98.5 | 40.0 | 68 | |
| 2 | 100.7 | 40.0 | 64 | 2 | 99.8 | 39.8 | 64 | |
| 3 | 88.3 | 39.2 | 64 | 3 | 95.1 | 39.3 | 64 | |
| 4 | 95.9 | 40.8 | 64 | 4 | 99.7 | 39.2 | 62 | |
| 5 | 100.3 | 40.6 | 64 | 5 | 96.2 | 39.3 | 62 | |
| 6 | 99.2 | 40.2 | 62 | 6 | 98.2 | 39.3 | 62 | |
| 7 | 88.8 | 40.1 | 64 | 7 | 95.0 | 40.4 | 62 | |
| 8 | 90.6 | 40.5 | 64 | 8 | 95.2 | 40.0 | 62 | |
| 9 | 89.9 | 40.7 | 9 | 92.8 | 40.0 | 62 | ||
| 10 | 90.3 | 41.0 | 62 | 10 | 93.9 | 40.3 | 62 | |
| 11 | 100.6 | 39.8 | 82 | 11 | 92.6 | 40.3 | 62 | |
| 12 | 98.1 | 39.0 | 80 | 12 | 93.2 | 40.2 | 62 | |
| 13 | 95.4 | 39.0 | 80 | 13 | 94.2 | 40.1 | 62 | |
| 14 | 98.8 | 39.8 | 80 | 14 | 92.3 | 40.0 | 62 | |
| 15 | 90.2 | 40.0 | 80 | 15 | 95.4 | 39.7 | 62 | |
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TABLE L-3. TEST SURFACE PEAK FRICTIONAL COEFFICIENTS (PFC) FOURTH TEST ROUND, PRETEST MEASUREMENTS, 11/17/99 |
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| Dry Surface | Wet Surface | |||||||
| Test | PFC | Test Speed, | Air Temp, | Test | PFC | Test Speed, | Air Temp, | |
| Number | Number | mph | deg F | Number | Number | mph | deg F | |
| 1 | 95.6 | 40.2 | 51 | 1 | 91.6 | 39.8 | 48 | |
| 2 | 97.5 | 39.7 | 51 | 2 | 90.9 | 39.9 | 48 | |
| 3 | 91.4 | 39.9 | 51 | 3 | 90.0 | 39.6 | 49 | |
| 4 | 96.9 | 40.8 | 51 | 4 | 89.6 | 39.4 | 49 | |
| 5 | 93.8 | 40.3 | 50 | 5 | 92.2 | 39.1 | 49 | |
| 6 | 93.6 | 39.5 | 50 | 6 | 93.7 | 39.7 | 49 | |
| 7 | 95.5 | 39.9 | 53 | 7 | 93.3 | 39.8 | 49 | |
| 8 | 95.4 | 39.3 | 53 | 8 | 92.3 | 40.2 | 49 | |
| 9 | 93.6 | 39.7 | 51 | 9 | 91.5 | 40.3 | 50 | |
| 10 | 93.7 | 39.9 | 51 | 10 | 90.4 | 40.8 | 50 | |
| 11 | 94.4 | 40.2 | 51 | 11 | 92.5 | 40.6 | 48 | |
| 12 | 96.8 | 39.4 | 51 | 12 | 89.8 | 40.2 | 48 | |
| 13 | 93.8 | 39.3 | 51 | 13 | 89.6 | 39.8 | 48 | |
| 14 | 97.7 | 39.8 | 51 | 14 | 87.8 | 40.3 | 48 | |
| 15 | 92.8 | 40.2 | 51 | 15 | 93.1 | 40.3 | 48 | |
| Fourth Test Round, Post-test Measurements, 11/29/99 | ||||||||
| 1 | 99.9 | 40.3 | 64 | 1 | 91.1 | 40.3 | 51 | |
| 2 | 101.2 | 40.3 | 53 | 2 | 86.8 | 40.3 | 51 | |
| 3 | 99.4 | 39.7 | 53 | 3 | 88.3 | 40.8 | 51 | |
| 4 | 98.1 | 40.1 | 51 | 4 | 89.0 | 40.3 | 51 | |
| 5 | 100.1 | 39.5 | 50 | 5 | 91.2 | 40.6 | 51 | |
| 6 | 100.0 | 39.8 | 48 | 6 | 90.2 | 40.2 | 51 | |
| 7 | 98.7 | 40.2 | 48 | 7 | 92.3 | 39.8 | 51 | |
| 8 | 99.1 | 40.5 | 48 | 8 | 92.8 | 39.8 | 51 | |
| 9 | 101.5 | 39.5 | 48 | 9 | 91.2 | 39.9 | 51 | |
| 10 | 100.9 | 40.4 | 51 | 10 | 91.8 | 39.7 | 51 | |
| 11 | 100.9 | 40.4 | 51 | 11 | 90.4 | 39.1 | 51 | |
| 12 | 98.7 | 40.0 | 51 | 12 | 88.8 | 39.4 | 51 | |
| 13 | 98.3 | 39.9 | 51 | 13 | 90.0 | 39.9 | 51 | |
| 14 | 101.6 | 40.2 | 51 | 14 | 91.2 | 40.2 | 51 | |
| 15 | 98.8 | 40.4 | 51 | 15 | 90.3 | 40.7 | 51 | |
| Post-test wet surface PFC numbers were developed from dry surface PFC data from the same day, | ||||||||
| and were correlated to similar ratios from previously recorded dry and wet surface PFC data. | ||||||||