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Publication Number:  FHWA-HRT-13-091    Date:  November 2014
Publication Number: FHWA-HRT-13-091
Date: November 2014

 

Verification, Refinement, and Applicability of Long-Term Pavement Performance Vehicle Classification Rules

Appendix A. Vehicle Classification Rule sets

This appendix contains the classification rules sets used in conducting this study. Table 36 presents the LTPP classification rule set for SPS WIM sites that was adopted in March 2006 by Traffic ETG. It was used as the baseline LTPP rule set. Table 37 and table 38 present data received for California from Caltrans delineating the Caltrans District 07 Classification Table by Number of Axles as of June 1996 and the California CALIF 4 WIM Classification Rule Set, respectively. Table 39 and table 40 are Florida’s Classification Rule Set and the Florida Department of Transportation’s Classifier Axle Spacing Rule Set, respectively. Table 41 is the Michigan Department of Transportation’s Classification and Weight Parameters for WIM. Table 42 is Minnesota’s Classification Rule Set Rule Table dated 2006. Table 43 and table 44 are Missouri’s and Ohio’s Classification Rule Sets, respectively. Following these tables is section that presents Virginia Department of Transportation’s Rule Set in the form of output from the State’s system. Table 45 presents output from Washington Department of Transportation’s system describing its classifications.

Table 36. LTPP classification rule set for SPS WIM sites (adopted March 2006 by Traffic ETG).

Class

Vehicle Type

No. of Axles

Spacing (ft)

Spacing 2
(ft)

Spacing 3
(ft)

Spacing 4
(ft)

Spacing 5
(ft)

Spacing 6 (ft)

Spacing 7 (ft)

Spacing 8 (ft)

Gross Weight Min-Max (kips)

Axle 1 WeightMin1 (kips)

1

Motorcycle

2

1.00-5.99

-

-

-

-

-

-

-

0.10-3.00

-

2

Passenger Car

6.00-10.10

-

-

-

-

-

-

-

1.00-7.99

-

3

Other (Pickup/Van)

10.11-23.09

-

-

-

-

-

-

-

1.00-7.99

-

4

Bus

23.10-40.00

-

-

-

-

-

-

-

12.00 >

-

5

2D Single Unit

6.00-23.09

-

-

-

-

-

-

-

8.00 >

2.5

2

Car with1 Axle Trailer

3

6.00-10.10

6.00-25.00

-

-

-

-

-

-

1.00-11.99

-

3

Other with 1 Axle Trailer

10.11-23.09

6.00-25.00

-

-

-

-

-

-

1.00-11.99

-

4

Bus

23.10-40.00

3.00-7.00

-

-

-

-

-

-

20.00 >

-

5

2D with 1 Axle Trailer

6.00-23.09

6.30-30.00

-

-

-

-

-

-

12.00-19.99

2.5

6

3 Axle Single Unit

6.00-23.09

2.50-6.29

-

-

-

-

-

-

12.00 >

3.5

8

Semi, 2S1

6.00-23.09

11.00-45.00

-

-

-

-

-

-

20.00 >

3.5

2

Car with 2 Axle Trailer

4

6.00-10.10

6.00-30.00

1.00-11.99

-

-

-

-

-

1.00-11.99

-

3

Other with 2 Axle Trailer

10.11-23.09

6.00-30.00

1.00-11.99

-

-

-

-

-

1.00-11.99

-

5

2D with 2 Axle Trailer

6.00-26.00

6.30-40.00

1.00-20.00

-

-

-

-

-

12.00-19.99

2.5

7

4 Axle Single Unit

6.00-23.09

2.50-6.29

2.50-12.99

-

-

-

-

-

12.00 >

3.5

8

Semi, 3S1

6.00-26.00

2.50-6.29

13.00-50.00

-

-

-

-

-

20.00 >

5.0

8

Semi, 2S2

6.00-26.00

8.00-45.00

2.50-20.00

-

-

-

-

-

20.00 >

3.5

3

Other with 3 Axle Trailer

5

10.11-23.09

6.00-25.00

1.00-11.99

1.00-11.99

-

-

-

-

1.00-11.99

-

5

2D with 3 Axle Trailer

6.00-23.09

6.30-35.00

1.00-25.00

1.00-11.99

-

-

-

-

12.00-19.99

2.5

7

5 Axle Single Unit

6.00-23.09

2.50-6.29

2.50-6.29

2.50-6.30

-

-

-

-

12.00 >

3.5

9

Semi, 3S2

6.00-30.00

2.50-6.29

6.30-65.00

2.50-11.99

-

-

-

-

20.00 >

5.0

9

Truck+Full Trailer (3-2)

6.00-30.00

2.50-6.29

6.30-50.00

12.00-27.00

-

-

-

-

20.00>

3.5

9

Semi, 2S3

6.00-30.00

16.00-45.00

2.50-6.30

2.50-6.30

-

-

-

-

20.00 >

3.5

11

Semi+Full Trailer, 2S12

6.00-30.00

11.00-26.00

6.00-20.00

11.00-26.00

-

-

-

-

20.00 >

3.5

10

Semi, 3S3

6

6.00-26.00

2.50-6.30

6.10-50.00

2.50-11.99

2.50-10.99

-

-

-

20.00 >

5.0

12

Semi+Full Trailer, 3S12

6.00-26.00

2.50-6.30

11.00-26.00

6.00-24.00

11.00-26.00

-

-

-

20.00 >

5.0

13

7 Axle Multi

7

6.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

-

-

20.00 >

5.0

13

8 Axle Multi

8

6.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

-

20.00 >

5.0

13

9 Axle Multi

9

6.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

3.00-45.00

20.00 >

5.0

1Suggested Axle 1 minimum weight threshold if allowed by WIM system’s class algorithm programming

- Indicates not applicable

Max = Maximum

Min = Minimum

Table 37. Caltrans District 07 Classification Table by Number of Axles (as of 6/96).

No. of Axles

Class

Axle 1-2 (ft)

Axle 2-3 (ft)

Axle 3-4 (ft)

Axle 4-5 (ft)

Axle 5-6 (ft)

Axle 6-7 (ft)

Axle 7-8 (ft)

Axle 8-9 (ft)

2

1

00.1-06.1

-

-

-

-

-

-

-

2

2

06.1-10.0

-

-

-

-

-

-

-

2

3

10.0-14.5

-

-

-

-

-

-

-

2

4

23.1-40.0

-

-

-

-

-

-

-

2

5

14.5-23.1

-

-

-

-

-

-

-

3

2

06.1-10.0

06.0-25.0

-

-

-

-

-

-

3

3

10.0-14.5

06.0-25.0

-

-

-

-

-

-

3

4

23.1-40.0

03.5-06.0

-

-

-

-

-

-

3

6

06.1-23.1

03.5-06.0

-

-

-

-

-

-

3

8

06.1-23.0

11.0-40.0

-

-

-

-

-

-

4

2

06.1-10.0

06.0-25.0

01.0-12.0

-

-

-

-

-

4

3

10.0-14.5

06.0-25.0

01.0-12.0

-

-

-

-

-

4

7

06.1-23.1

03.5-06.0

03.5-13.0

-

-

-

-

-

4

8

06.1-23.0

03.5-06.0

06.1-44.0

-

-

-

-

-

4

8

06.1-23.0

11.0-44.0

03.5-12.0

-

-

-

-

-

5

3

10.0-14.5

06.0-25.0

01.0-03.5

01.0-03.5

-

-

-

-

5

9

06.1-26.0

03.5-06.0

06.1-46.0

03.5-10.9

-

-

-

-

5

11

06.1-26.0

11.1-26.0

06.1-20.0

11.1-26.0

-

-

-

-

5

14

06.1-23.0

03.5-06.0

06.1-23.0

11.0-27.0

-

-

-

-

6

10

06.1-26.0

03.5-06.0

06.1-46.0

00.1-11.0

00.1-11.0

-

-

-

6

12

06.1-26.0

03.5-06.0

11.1-26.0

06.1-24.0

11.1-26.0

-

-

-

7

13

06.1-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

-

-

8

13

06.1-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

-

13

06.1-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

03.5-45.0

Default Classes (for Vehicles That Do Not Fit Into Table Above)

No. of Axles

1

2

3

4

5

6

7

8

9

Class

2

2

15

15

15

15

15

15

15

- Indicates not applicable

 

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