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.

  • 80
  • 60
  • 40
  • 20
  • 0
  • 0
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90
  • 100
Measure Percentile
0 0
0.40 1
0.56 2
0.69 3
0.80 4
0.90 5
1.00 6
1.10 7
1.20 8
1.29 9
1.37 10
1.45 11
1.54 12
1.61 13
1.70 14
1.78 15
1.85 16
1.93 17
2.00 18
2.08 19
2.16 20
2.24 21
2.32 22
2.40 23
2.48 24
2.56 25
2.65 26
2.73 27
2.82 28
2.91 29
3.00 30
3.08 31
3.16 32
3.25 33
3.33 34
3.43 35
3.53 36
3.61 37
3.71 38
3.80 39
3.91 40
4.00 41
4.11 42
4.21 43
4.34 44
4.46 45
4.58 46
4.69 47
4.81 48
4.95 49
5.04 50
5.19 51
5.33 52
5.44 53
5.60 54
5.73 55
5.88 56
6.00 57
6.19 58
6.33 59
6.53 60
6.71 61
6.90 62
7.10 63
7.28 64
7.48 65
7.67 66
7.91 67
8.16 68
8.40 69
8.65 70
9.00 71
9.26 72
9.53 73
9.88 74
10.23 75
10.60 76
10.95 77
11.33 78
11.72 79
12.20 80
12.73 81
13.28 82
13.78 83
14.37 84
15.01 85
15.75 86
16.62 87
17.50 88
18.48 89
19.63 90
20.96 91
22.12 92
24.01 93
25.82 94
28.04 95
31.29 96
35.51 97
41.75 98
52.17 99
142.00 100