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.

  • 12
  • 9
  • 6
  • 3
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 98
Measure Percentile
0 0
0.08 1
0.09 2
0.11 3
0.13 4
0.14 5
0.15 6
0.17 7
0.17 8
0.20 9
0.21 10
0.22 11
0.25 12
0.26 13
0.26 14
0.29 15
0.31 16
0.34 17
0.34 18
0.38 19
0.40 20
0.42 21
0.45 22
0.50 23
0.51 24
0.54 25
0.57 26
0.60 27
0.63 28
0.67 29
0.70 30
0.72 31
0.76 32
0.78 33
0.83 34
0.86 35
0.88 36
0.93 37
1.01 38
1.02 39
1.03 40
1.07 41
1.12 42
1.16 43
1.17 44
1.21 45
1.25 46
1.27 47
1.31 48
1.36 49
1.40 50
1.41 51
1.45 52
1.51 53
1.56 54
1.61 55
1.67 56
1.68 57
1.75 58
1.76 59
1.77 60
1.82 61
1.90 62
2.00 63
2.02 64
2.03 65
2.09 66
2.15 67
2.23 68
2.29 69
2.34 70
2.35 71
2.39 72
2.47 73
2.54 74
2.63 75
2.68 76
2.78 77
2.82 78
3.00 79
3.02 80
3.04 81
3.20 82
3.34 83
3.44 84
3.52 85
3.67 86
3.81 87
4.01 88
4.15 89
4.29 90
4.52 91
4.68 92
5.01 93
5.26 94
5.61 95
6.04 96
6.63 97
7.34 98
8.78 99
20.40 100