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Publication Number: FHWA-RD-03-094
Date: March 2005

Estimating Cumulative Traffic Loads, Volume II:
Traffic Data Assessment and Axle Load Projection for The Sites With Acceptable Axle Weight Data, Final Report for Phase 2

APPENDIX A. SUMMARY OF RESULTS

This appendix provides summary of traffic projection results for all 890 sites with unique traffic ID numbers that are currently in the LTPP program and are included in the IMS database. The summary results are given in table 21. Traffic and other data were not available for several sites; a hyphen in a cell in table 21 indicates the unavailability of the data. The listing contains the following 14 variables:

  1. Agency: Postal abbreviation for the State or Province of the participating agency.
  2. SHRP ID: Site identification number assigned by LTPP program (SHRP stands for Strategic Highway Research Program).
  3. Traffic ID: Unique ID obtained by the combination of STATE_CODE (a 2–digit code assigned to each participating agency) and SHRP ID.
  4. GPS/SPS: Code indicating whether the section is a GPS (G) or SPS (S) section.
  5. Exp. No.: Code indicating to which LTPP experiment (exp.) the pavement section is assigned.
  6. Highway Functional Class: Code indicating functional classification of the highway site.
Table 19. Codes in the IMS database.
Highway
Functional Class
Description

1

Rural Principal Arterial–Interstate

2

Rural Principal Arterial–Other

6

Rural Minor Arterial

7

Rural Major Collector

8

Rural Minor Collector

9

Rural Local Collector

11

Urban Principal Arterial–Interstate

12

Urban Principal Arterial–Other Freeways and Expressways

14

Urban Other Principal Arterial

16

Urban Minor Arterial

17

Urban Collector

19

Urban Local

  1. Projection Cat.:

Table 20. Code indicating projection category (2 to 5).

Projection Category Description

2

Sites with truck class and axle weight distribution data.

3

Sites with truck class distribution data but without site–specific axle weight data.

4

Sites with truck volume data but without site–specific truck class and axle weight distribution data.

5

Sites without traffic data.

Note: Projection Category 1 is reserved for the sites with truck class and axle weight distribution data that can be used for the projection of monthly variation in traffic loads. The adequacy of data to project monthly variation in axle loads was not assessed.

  1. Projection Code: Projection confidence code:
    • A–Acceptable.
    • Q–Questionable.
    • N–Not available.
  2. Projection Status: Code indicating projection status:
    • I–Initial.
    • R–Reviewed.
  3. Pav. Type: Code indicating pavement type:
    • F–Flexible.
    • R–Rigid.
  4. Last Pr. Year: Last year for which traffic projections (pr.) are provided in the last three columns of table 21.
  5. Truck Volume: Projected average annual daily truck volume (in the LTPP traffic lane) in the last year (item 11, above) for which the projection is provided (trucks per day rounded to the nearest 10).
  6. Annual Growth Rate: Projected average annual growth rate (for the average daily truck volume) for the last 5 years for which the projection is provided.
  7. ESALs: Projected total annual ESALs (in the LTPP traffic lane) for the last year for which the projection is provided (rounded to the nearest 10).

Table 21. Summary of traffic projection results.

Agency SHRP ID Traffic ID GPS/ SPS Exp. No. Highway Functional Class Projections Pav. Type Last Pr. Year Traffic Characteristics
Cat. Code Status Traffic Volume Annual Growth Rate (%) ESALs

AL

0100

010100

S

1

2

5

N

I

AL

0600

010600

S

6

5

N

I

AL

1001

011001

G

6B

2

2

A

I

F

1998

680

1.60

268,740

AL

1011

011011

G

2

6

3

N

I

F

1998

190

0.49

AL

1019

011019

G

6S

2

2

Q

I

F

1998

440

0.77

194,420

AL

1021

011021

G

2

6

2

Q

I

F

1998

390

4.12

197,910

AL

3028

013028

G

3

11

2

Q

I

R

1998

1,550

8.86

668,160

AL

3998

013998

G

7C

1

2

A

I

R

1994

2,350

3.81

1,088,600

AL

4007

014007

G

4

11

2

Q

I

R

1998

960

4.22

743,190

AL

4073

014073

G

2

2

2

Q

I

F

1998

500

6.52

159,830

AL

4084

014084

G

4

11

2

Q

I

R

1998

3,170

4.00

2,271,870

AL

4125

014125

G

2

14

2

Q

I

F

1998

750

2.00

358,400

AL

4126

014126

G

1

1

2

Q

I

F

1998

3,030

3.00

876,890

AL

4127

014127

G

6B

2

3

N

I

F

1998

310

0.42

AL

4129

014129

G

6B

2

2

Q

I

F

1997

460

0.00

137,070

AL

4155

014155

G

6B

2

3

N

I

F

1998

770

6.00

AL

5008

015008

G

5

1

2

Q

I

R

1998

3,120

6.14

2,226,460

AL

6012

016012

G

6A

1

2

A

I

F

1998

2,780

3.90

1,482,520

AL

6019

016019

G

6D

1

3

N

I

1998

2,320

5.57

AK

1001

021001

G

1

2

2

Q

I

F

1998

200

0.68

26,360

AK

1002

021002

G

6B

2

2

Q

I

F

1998

200

0.68

26,960

AK

1004

021004

G

6B

14

2

Q

I

F

1998

360

3.77

86,040

AK

1008

021008

G

6A

6

2

Q

I

F

1998

120

2.00

38,440

AK

6010

026010

G

6A

1

2

Q

I

F

1996

320

1.87

58,140

AK

9035

029035

G

6B

2

2

Q

I

F

1998

100

6.00

33,300

AZ

0100

040100

S

1

2

2

A

R

F

1998

900

9.27

272,650

AZ

0200

040200

S

2

1

2

A

R

R

1998

3,290

6.00

1,706,650

AZ

0500

040500

S

5

1

2

A

R

F

1998

720

3.00

283,870

AZ

0600

040600

S

6

1

2

A

R

R

1998

2,620

5.00

1,917,230

AZ

1001

041001

G

1

1

2

A

R

F

1996

2,620

7.17

913,190

AZ

1002

041002

G

1

1

2

A

R

F

1998

2,200

7.77

841,830

AZ

1003

041003

G

6S

1

3

A

R

F

1998

3,400

7.05

1,231,890

AZ

1006

041006

G

6S

1

2

A

R

F

1998

3,160

6.62

1,216,480

AZ

1007

041007

G

6S

1

2

A

R

F

1998

3,530

–11.25

1,308,390

AZ

1015

041015

G

1

1

3

A

R

F

1998

620

7.42

253,850

Table 21. Summary of traffic projection results.

Agency SHRP ID Traffic ID GPS/ SPS Exp. No. Highway Functional Class Projections Pav. Type Last Pr. Year Traffic Characteristics
Cat. Code Status Traffic Volume Annual Growth Rate (%) ESALs

AZ

1016

041016

G

1

1

2

A

R

F

1998

540

7.37

219,680

AZ

1017

041017

G

1

1

2

Q

R

F

1998

540

4.00

138,280

AZ

1018

041018

G

1

1

3

A

R

F

1998

520

5.23

219,040

AZ

1021

041021

G

1

1

3

A

R

F

1998

2,240

11.25

1,400,330

AZ

1022

041022

G

1

1

3

A

R

F

1998

2,240

11.25

1,348,000

AZ

1024

041024

G

1

1

2

A

R

F

1998

2,080

6.70

1,156,220

AZ

1025

041025

G

1

1

2

A

R

F

1998

2,130

7.35

1,305,460

AZ

1034

041034

G

1

6

2

Q

R

F

1998

460

3.81

73,190

AZ

1036

041036

G

1

2

3

A

R

F

1998

800

12.15

252,190

AZ

1037

041037

G

1

2

3

N

R

F

1998

300

7.49

AZ

1062

041062

G

6S

1

2

A

R

F

1998

2,190

8.75

1,494,820

AZ

1065

041065

G

6S

1

2

A

R

F

1998

2,140

9.28

762,300

AZ

6053

046053

G

6A

1

2

A

R

F

1997

2,080

4.00

1,003,140

AZ

6054

046054

G

6A

1

2

Q

R

F

1998

570

1.63

164,270

AZ

6055

046055

G

6A

2

2

Q

R

F

1998

790

1.40

167,870

AZ

6060

046060

G

6A

1

2

A

R

F

1998

590

6.68

223,870

AZ

7079

047079

G

5

12

2

A

R

R

1998

660

13.10

193,680

AZ

7613

047613

G

3

14

2

Q

R

R

1998

2,000

9.86

502,380

AZ

7614

047614

G

3

1

2

A

R

R

1998

1,700

4.58

777,360

AR

0100

050100

S

1

2

2

Q

I

F

1998

820

5.29

217,740

AR

0200

050200

S

2

1

3

N

I

R

1998

3,490

0.00

AR

0800

050800

S

8

17

5

N

I

AR

0900

050900

S

9

5

N

I

AR

2042

052042

G

6S

2

2

A

I

F

1998

180

0.00

45,280

AR

3011

053011

G

3

2

2

A

I

R

1998

690

4.18

303,190

AR

3048

053048

G

2

2

2

Q

I

F

1998

110

5.00

31,440

AR

3058

053058

G

2

12

2

Q

I

F

1998

1,120

22.00

320,510

AR

3059

053059

G

4

11

2

Q

I

R

1998

660

6.00

260,080

AR

3071

053071

G

2

2

2

A

I

F

1998

1,770

8.12

478,440

AR

3073

053073

G

4

11

4

N

I

1998

6,570

8.00

AR

3074

053074

G

4

1

2

Q

I

R

1998

3,210

0.00

1,921,590

AR

4019

054019

G

4

12

2

A

I

R

1998

1,220

8.00

551,030

AR

4021

054021

G

4

14

2

A

I

R

1998

990

-7.54

390,970

AR

4023

054023

G

4

2

2

A

I

R

1998

1,320

6.00

442,060

AR

4046

054046

G

4

2

2

Q

I

R

1998

790

6.78

357,540

Table 21. Summary of traffic projection results, continued.

Agency SHRP ID Traffic ID GPS/ SPS Exp. No. Highway Functional Class Projections Pav. Type Last Pr. Year Traffic Characteristics
Cat. Code Status Traffic Volume Annual Growth Rate (%) ESALs

AR

5803

055803

G

5

11

2

A

I

R

1998

720

10.85

122,810

AR

5805

055805

G

5

11

2

Q

I

R

1998

1,870

7.21

450,270

AR

A600

05A600

S

6

2

5

N

I

CA

0500

060500

S

5

1

2

Q

I

F

1998

2,040

6.50

821,640

CA

1253

061253

G

1

2

2

Q

I

F

1998

90

2.56

9,700

CA

2002

062002

G

2

2

4

N

I

1998

610

0.80

CA

2004

062004

G

2

1

4

N

I

1998

4,500

10.00

CA

2038

062038

G

2

2

4

N

I

1998

400

0.50

CA

2040

062040

G

2

2

2

A

I

F

1998

840

–10.78

201,420

CA

2041

062041

G

6B

2

4

N

I

1998

840

6.35

CA

2051

062051

G

6B

12

3

N

I

F

1998

1,080

4.00

CA

2053

062053

G

2

1

2

Q

I

F

1998

520

5.00

71,220

CA

2647

062647

G

2

2

2

Q

I

F

1998

530

2.88

200,330

CA

3005

063005

G

3

1

2

A

I

R

1998

2,920

4.61

1,711,740

CA

3010

063010

G

3

11

4

N

I

1998

3,600

7.50

CA

3013

063013

G

3

1

4

N

I

1998

2,600

7.00

CA

3017

063017

G

3

12

4

N

I

1998

890

3.07

CA

3019

063019

G

3

1

4

N

I

1998

4,500

6.73

CA

3021

063021

G

3

1

2

A

I

R

1998

700

–16.11

180,780

CA

3024

063024

G

3

1

3

N

I

R

1998

2,290

7.00

CA

3030

063030

G

3

1

2

A

I

R

1998

2,850

4.16

1,468,130

CA

3042

063042

G

3

1

2

A

I

R

1998

3,990

3.50

2,034,110

CA

6044

066044

G

6A

2

2

A

I

F

1998

390

2.00

42,580

CA

7452

067452

G

2

6

2

Q

I

F

1998

230

3.42

21,600

CA

7454

067454

G

1

6

2

Q

I

F

1998

110

2.00

22,830

CA

7455

067455

G

5

1

2

A

I

R

1998

2,260

7.58

809,980

CA

7456

067456

G

3

1

4

N

I

1998

1,850

7.00

CA

7491

067491

G

6S

1

4

N

I

1998

1,360

4.58

CA

7493

067493

G

3

1

4

N

I

1998

2,800

6.43

CA

8149

068149

G

6S

1

4

N

I

1998

1,770

7.31

CA

8150

068150

G

2

6

2

Q

I

F

1998

890

–0.78

188,600

CA

8151

068151

G

2

1

2

A

I

F

1998

2,220

6.68

937,730

CA

8153

068153

G

6B

6

2

Q

I

F

1998

250

1.38

27,240

CA

8156

068156

G

1

6

2

Q

I

F

1998

250

2.30

94,070

CA

8201

068201

G

2

6

2

Q

I

F

1998

230

3.00

36,330

Table 21. Summary of traffic projection results.

Agency SHRP ID Traffic ID GPS/ SPS Exp. No. Highway Functional Class Projections Pav. Type Last Pr. Year Traffic Characteristics
Cat. Code Status Traffic Volume Annual Growth Rate (%) ESALs

CA

8202

068202

G

2

2

2

Q

I

F

1998

570

3.34

93,550

CA

8534

068534

G

6B

1

2

Q

I

F

1998

730

5.24

128,700

CA

8535

068535

G

6B

1

2

A

I

F

1998

960

4.00

196,790

CA

9048

069048

G

9

1

4

N

I

1998

1,100

5.80

CA

9049

069049

G

9

12

4

N

I

1998

3,080

6.13

CA

9107

069107

G

9

1

4

N

I

1998

1,460

3.48

CO

0200

080200

S

2

1

2

Q

I

R

1998

960

0.00

346,050

CO

0500

080500

S

5

1

2

Q

I

F

1998

1,150

5.00

536,060

CO

0800

080800

S

8

9

5

N

I

CO

1029

081029

G

6B

2

2

Q

I

F

1998

100

1.00

14,480

CO

1047

081047

G

6B

7

2

Q

I

F

1998

150

0.00

38,210

CO

1053

081053

G

1

2

3

N

I

F

1998

450

2.94

CO

1057

081057

G

1

14

3

N

I

F

1998

310

3.00

CO

2008

082008

G

2

2

3

N

I

F

1994

260

0.00

CO

3032

083032

G

3

1

2

A

I

R

1998

820

5.34

381,890

CO

6002

086002

G

6C

1

2

Q

I

F

1998

1,530

3.88

264,700

CO

6013

086013

G

6A

14

3

N

I

F

1998

370

12.00

CO

7035

087035

G

7S

1

3

N

I

R

1998

1,640

3.73

CO

7036

087036

G

7A

1

4

N

I

1997

1,580

5.32

CO

7776

087776

G

3

1

3

N

I

R

1998

1,700

4.93

CO

7780

087780

G

6B

2

3

N

I

F

1998

340

0.51

CO

7781

087781

G

6B

2

3

N

I

F

1998

260

0.00

CO

7783

087783

G

6A

1

2

Q

I

F

1998

770

3.00

305,640

CO

9019

089019

G

9

1

2

Q

I

R

1998

2,610

5.76

667,800

CO

9020

089020

G

9

1

2

Q

I

R

1998

2,810

6.15

882,360

CO

A400

08A400

S

4

5

N

I

CT

0900

090900

S

9

5

N

R

CT

1803

091803

G

1

2

3

N

R

F

1998

210

7.00

CT

4008

094008

G

4

1

2

Q

R

R

1998

2,700

5.23

1,444,240

CT

4020

094020

G

7B

2

2

A

R

R

1998

800

2.84

119,860

CT

5001

095001

G

7B

1

2

Q

R

R

1998

3,780

4.73

1,734,800

DE

0100

100100

S

1

2

5

N

R

DE

0200

100200

S

2

2

5

N

R

DE

1201

101201

G

4

2

4

N

R

1998

720

6.50

DE

1450

101450

G

6C

2

4

N

R

1998

1,200

1.48

Table 21. Summary of traffic projection results.

Agency SHRP ID Traffic ID GPS/ SPS Exp. No. Highway Functional Class Projections Pav. Type Last Pr. Year Traffic Characteristics
Cat. Code Status Traffic Volume Annual Growth Rate (%) ESALs

DE

4002

104002

G

7B

2

4

N

R

1998

480

11.23

DE

5004

105004

G

5

1

4

N

R

1996

4,730

16.23

DE

5005

105005

G

7B

2

4

N

R

1998

620

5.06

DC

1400

111400

G

6B

11

4

N

I

1996

1,110

5.00

FL

0100

120100

S

1

2

3

N

I

F

1998

800

5.00

FL

0500

120500

S

5

2

5

N

I

FL

0900

120900

S

9

5

N

I

FL

1030

121030

G

1

2

3

N

I

F

1998

400

10.00

FL

1060

121060

G

1

12

3

N

I

F

1998

160

10.00

FL

1370

121370

G

1

6

2

Q

I

F

1998

110

3.00

53,380

FL

3804

123804

G

3

1

2

Q

I

R

1998

1,430

8.50

1,156,350

FL

3811

123811

G

3

1

2

Q

I

R

1998

1,620

6.00

784,160

FL

3995

123995

G

1

11

2

Q

I

F

1998

1,960

7.00

713,630

FL

3996

123996

G

1

2

2

Q

I

F

1998

220

2.00

69,400

FL

3997

123997

G

6B

2

3

N

I

F

1998

510

5.17

FL

4000

124000

G

3

2

2

Q

I

R

1998

560

2.00

257,460

FL

4057

124057

G

3

1

2

Q

I

R

1998

1,740

5.00

956,430

FL

4059

124059

G

3

2

2

Q

I

R

1998

130

6.00

40,200

FL

4096

124096

G

2

6

2

Q

I

F

1998

100

–13.83

24,980

FL

4097

124097

G

2

1

2

Q

I

F

1998

1,630

6.00

467,340

FL

4099

124099

G

1

14

2

Q

I

F

1998

250

2.00

144,540

FL

4100

124100

G

2

14

2

Q

I

F

1998

140

3.00

30,180

FL

4101

124101

G

6B

12

3

N

I

F

1998

1,150

4.00

FL

4102

124102

G

1

12

5

N

I

Table 21. Summary of traffic projection results, continued

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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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