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

Get Road Smart.


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.

  • 2
  • 1.5
  • 1
  • 0.5
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 100
Measure Percentile
0 0
0.01 1
0.01 2
0.01 3
0.01 4
0.02 5
0.02 6
0.02 7
0.03 8
0.03 9
0.03 10
0.03 11
0.04 12
0.04 13
0.04 14
0.04 15
0.05 16
0.05 17
0.05 18
0.05 19
0.05 20
0.05 21
0.06 22
0.06 23
0.06 24
0.07 25
0.07 26
0.07 27
0.07 28
0.07 29
0.08 30
0.08 31
0.08 32
0.08 33
0.08 34
0.08 35
0.09 36
0.09 37
0.09 38
0.10 39
0.10 40
0.10 41
0.10 42
0.11 43
0.11 44
0.11 45
0.12 46
0.12 47
0.12 48
0.12 49
0.13 50
0.13 51
0.14 52
0.14 53
0.14 54
0.15 55
0.15 56
0.16 57
0.16 58
0.17 59
0.17 60
0.18 61
0.18 62
0.19 63
0.20 64
0.20 65
0.21 66
0.22 67
0.22 68
0.24 69
0.25 70
0.27 71
0.28 72
0.29 73
0.32 74
0.34 75
0.36 76
0.38 77
0.39 78
0.43 79
0.45 80
0.47 81
0.49 82
0.52 83
0.55 84
0.57 85
0.60 86
0.63 87
0.65 88
0.68 89
0.71 90
0.78 91
0.84 92
0.89 93
0.93 94
0.98 95
1.09 96
1.20 97
1.31 98
1.58 99
2.48 100