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Publication Number: FHWA-HRT-05-079
Date: May 2006

Optimization of Traffic Data Collection for Specific Pavement Design Applications

Appendix A. CARD-4 and CARD-7 Descriptions

 

Table 33. Card-4: Vehicle classification record.
Columns Width Description
1 1 Vehicle classification record code (4)
2-3 2 State code
4-5 2 Functional classification
6-8 3 Station identification number
9 1 Direction of travel
10-11 2 Year of data
12-13 2 Month of data
14-15 2 Date of month
16-17 2 Hour of day
18-19 2 Number of motorcycles (optional)
20-23 4 Number of passenger cars or all two-axle, four-tire, single-unit vehicles
24-26 3 Number of other two-axle, four-tire, single-unit vehicles
27-28 2 Number of buses
29-31 3 Number of two-axle, six-tire, single-unit trucks
32-33 2 Number of three-axle, single-unit trucks
34-35 2 Number of four- or more axle, single-unit trucks
36-37 2 Number of four- or less axle, single-trailer trucks
38-40 3 Number of five-axle, single-trailer trucks
41-42 2 Number of six- or more axle, single-trailer trucks
43-44 2 Number of five- or less axle, multi-trailer trucks
45-46 2 Number of six-axle, multi-trailer trucks
47-48 2 Number of seven- or more axle, multi-trailer trucks
49 1 Motorcycle reporting indicator
50 1 Vehicle class combination indicator
51 1 Lane of travel: 0 = combined lanes, 1 = outside (rightmost) lane, 2 through 9 = other lanes in order toward innermost lane
52-80 31 Blank or optional State data

 

Table 34. Card-7: Truck weight record.
Columns Width Description
Face Record
1 1 Truck weight record code (7)
2-3 2 State code
4-5 2 Functional classification
6-8 3 Station identification number
9 1 Direction of travel
10-11 2 Year of data
12-13 2 Month of data
14-15 2 Date of month
16-17 2 Hour of day
18-23 6 Vehicle type code
24-27 4 (open)
28 1 Day of week (optional)
29-34 6 (open)
35 1 Lane of travel
36-41 6 (open)
42-45 4 Total weight of truck or combination
46-48 3 A axle weight (hundreds of pounds)
49-51 3 B axle weight (hundreds of pounds)
52-54 3 C axle weight (hundreds of pounds)
55-57 3 D axle weight (hundreds of pounds)
58-60 3 E axle weight (hundreds of pounds)
61-63 3 A-B axle spacing (feet and tenths)
64-66 3 B-C axle spacing (feet and tenths)
67-69 3 C-D axle spacing (feet and tenths)
70-72 3 D-E axle spacing (feet and tenths)
73-76 4 Total wheelbase (feet and tenths)
77-79 3 Record serial number
80 1 Continuation indicator: 0 = no continuation record, 1 = has a continuation record
Continuation Record*
1-23 23 Same as columns 1 through 23 of the face record
23-28 5 (open)
29-31 3 F axle weight (hundreds of pounds)
32-34 3 G axle weight (hundreds of pounds)
35-37 3 H axle weight (hundreds of pounds)
38-40 3 I axle weight (hundreds of pounds)
41-43 3 J axle weight (hundreds of pounds)
44-46 3 K axle weight (hundreds of pounds)
47-49 3 L axle weight (hundreds of pounds)
50-52 3 M axle weight (hundreds of pounds)
53-55 3 E-F axle spacing (feet and tenths)
56-58 3 F-G axle spacing (feet and tenths)
59-61 3 G-H axle spacing (feet and tenths)
62-64 3 H-I axle spacing (feet and tenths)
65-67 3 I-J axle spacing (feet and tenths)
68-70 3 J-K axle spacing (feet and tenths)
71-73 3 K-L axle spacing (feet and tenths)
74-76 3 L-M axle spacing (feet and tenths)
77-79 3 Record serial number (same as face record)
80 1 Continuation indicator: 2 = first continuation record for a vehicle with more than 13 axles, 9 = last continuation record

a Used only for truck combinations having six or more axles. Immediately follows the face record.

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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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