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.

  • 12
  • 9
  • 6
  • 3
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 100
Measure Percentile
0 0
0.07 1
0.09 2
0.11 3
0.13 4
0.15 5
0.16 6
0.17 7
0.20 8
0.20 9
0.22 10
0.25 11
0.26 12
0.29 13
0.33 14
0.34 15
0.36 16
0.39 17
0.42 18
0.46 19
0.51 20
0.53 21
0.56 22
0.60 23
0.63 24
0.67 25
0.70 26
0.72 27
0.77 28
0.81 29
0.84 30
0.88 31
0.89 32
0.94 33
1.01 34
1.02 35
1.03 36
1.07 37
1.11 38
1.15 39
1.17 40
1.21 41
1.25 42
1.27 43
1.31 44
1.36 45
1.40 46
1.41 47
1.45 48
1.51 49
1.54 50
1.59 51
1.62 52
1.67 53
1.68 54
1.75 55
1.75 56
1.78 57
1.84 58
1.89 59
1.95 60
2.01 61
2.03 62
2.07 63
2.14 64
2.20 65
2.26 66
2.33 67
2.34 68
2.36 69
2.43 70
2.51 71
2.58 72
2.63 73
2.69 74
2.80 75
2.84 76
3.00 77
3.02 78
3.04 79
3.17 80
3.30 81
3.42 82
3.51 83
3.61 84
3.75 85
3.89 86
4.03 87
4.20 88
4.35 89
4.52 90
4.68 91
4.93 92
5.21 93
5.51 94
5.84 95
6.34 96
7.00 97
7.71 98
9.21 99
24.00 100