For your protection, your login session will expire in 0:00, do you wish extend your session or logout?
FMCSA - Federal Motor Carrier Safety Adminstration

CSA - Compliance, Safety, Accountability

Working Together for Safety.


SMS - Safety Measurement System SMS - Safety Measurement System

Measure vs. Percentile

Carrier violations or crashes are weighted by time and severity to produce a measure for that carrier in each BASIC. The measure is then used to assign that carrier to a percentile rank containing carriers’ information in similar safety event groups. Expand for more information.

Carrier violations or crashes are weighted by time and severity to produce a measure for that carrier in each BASIC. The measure only considers individual performance based on 24 months of data, with a measure of 0 indicating best performance. The measure is then used to assign that carrier to a percentile rank containing carriers’ information in similar safety event groups. The graph below shows how the carrier’s measure correlates with its percentile rank over a selected period of time.

  • 16
  • 12
  • 8
  • 4
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 98
Measure Percentile
0 0
0.16 1
0.30 2
0.43 3
0.57 4
0.68 5
0.77 6
0.87 7
0.96 8
1.03 9
1.11 10
1.17 11
1.24 12
1.32 13
1.39 14
1.46 15
1.53 16
1.59 17
1.65 18
1.71 19
1.78 20
1.84 21
1.90 22
1.95 23
2.02 24
2.08 25
2.14 26
2.20 27
2.26 28
2.32 29
2.37 30
2.43 31
2.49 32
2.55 33
2.62 34
2.67 35
2.73 36
2.80 37
2.86 38
2.92 39
2.99 40
3.06 41
3.13 42
3.20 43
3.27 44
3.34 45
3.39 46
3.46 47
3.52 48
3.59 49
3.66 50
3.71 51
3.78 52
3.85 53
3.92 54
4.00 55
4.07 56
4.14 57
4.20 58
4.28 59
4.36 60
4.44 61
4.52 62
4.61 63
4.69 64
4.79 65
4.86 66
4.94 67
5.03 68
5.12 69
5.22 70
5.31 71
5.40 72
5.50 73
5.61 74
5.72 75
5.84 76
5.96 77
6.09 78
6.22 79
6.35 80
6.49 81
6.64 82
6.80 83
6.97 84
7.16 85
7.34 86
7.55 87
7.77 88
8.01 89
8.24 90
8.50 91
8.83 92
9.16 93
9.57 94
10.06 95
10.56 96
11.28 97
12.34 98
14.03 99
25.11 100