Analysis of the Vehicle Inventory and Use Survey for Trucks ... - About

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CHANGES BETWEEN 1992 AND 1997 # Nationwide, the 5-axles or more truck fleet increased in size by 15%. 3.5 Make-up of the 5-Axles or More Fleet This section evaluates the make-up of the 5-axles or more fleet in terms of the 8 vehicle groups (as defined in Section 2.2). Table 3.5-1 summarizes both years, while Figures 3.5-1 and 3.5-2 provide a pictorial comparison. More detailed information is available in Appendix B. NATIONWIDE - 1997 # 86.9% of the 5-axles or more fleet was comprised of tractor-semitrailer combinations. More specifically, the 3-S2s accounted for 75% of the 5-axle fleet. # 5.7% of the 5-axles or more fleet were straight truck + trailer combinations. # 7.1% of the fleet were tractor + double trailer combinations (half of the doubles were STAA). # 0.3% of the fleet were tractor + triple trailer combinations. REGIONAL VARIATIONS - 1997 # The composition of the regional truck fleets in the North Central, North East, South Atlantic, and South Gulf parts of the U.S. is very similar. Over 90% of these regional fleets consist of tractor-semitrailer combinations. About 5 to 6% of these fleets contain truck+trailer combinations. Tractor + double trailers account for 5%, and triples are sparse. # The composition of West region fleet differs dramatically from the other regions. Tractorsemitrailer combinations only comprise 70% of the western fleet—note the U.S. average is 90%. There are more truck + trailer combinations (13%), tractor + double trailer combinations (17%), and tractor + triple trailer combinations (0.7%). Forty-Six percent of the total U.S. doubles fleet is located in the Western region. STATE VARIATIONS - 1997 The maps in Appendix B illustrate the state distribution of each of the 8 vehicle groups. 20
# California has the largest state population of truck+trailer combinations (18.8% of all truck+trailers) and the second largest tractor + double trailer (17% of all tractor + double trailer). # Illinois has the largest state population of tractor-semitrailer combinations (9.7% of all tractor-semitrailers), and the largest tractor-double trailer population (23.3% of all tractor + double trailer). # Oklahoma has the largest population of tractor-triples (47% of all triples). (Care needs to be taken when using state data because of the small sample sizes used to generate state truck fleet totals.) CHANGES BETWEEN 1992 AND 1997 # Nationwide, the mix of the 5-axles or more fleet has remained relatively constant. There was a decrease in the proportion of truck + trailer combinations (from 7.2% to 5.7% of the national 5-axles or more fleet) and an increase in the proportion of tractor + double trailer combinations (from 5.3% to 7.1% of the 5-axles or more fleet). The 3-S2 population remained steady at 9 out of every 10 tractor-semitrailers. The proportion of tractorsemitrailers with tridems has increased from 6.6% in 1992 to 9.6% in 1997. # Regionally, the proportion of tractor-semitrailers in each regional fleet has remained relatively constant. The distribution of the various vehicle types has remained constant for the North Central fleet. The fleets in the other four regions have experienced a decline in the proportion of truck + trailer combinations (for the most part) coupled to a corresponding increase in the proportion of tractor + double trailer combinations (see Table 3.5-1). 21
Page 1 and 2: Federal Highway Administration Offi
Page 3 and 4: The primary objectives of this repo
Page 5 and 6: # Survey and population estimates a
Page 7 and 8: # Tank truck, liquids or gas # Othe
Page 9 and 10: TABLE ES-1 1992 U.S. COMMERCIAL FRE
Page 11 and 12: Table of Contents 1.0 Introduction
Page 13 and 14: List of Tables Table 2.1-1 The 5 Ma
Page 15 and 16: 1.0 Introduction 1.1 Purpose and Sc
Page 17 and 18: Small Sample Size. In general, read
Page 19 and 20: Table 2.1-1 The 5 Major Vehicle Con
Page 21 and 22: Figure 2.2-1 Vehicle Group Descript
Page 23 and 24: 7) Doubles @ 6 + Axles 8) Triples (
Page 25 and 26: 3.0 Analysis of the Distribution of
Page 27 and 28: Table 3.2-1 1997 Total Truck Fleet
Page 29 and 30: 3.4 Size of the 5-Axles or More Fle
Page 31 and 32: Number of Vehicles 1,400,000 1,300,
Page 33: Table 3.4-2 1997 Truck Fleet (@ 5-a
Page 37 and 38: Table 3.5-1 Truck Fleet (@ 5-axles
Page 39 and 40: % of Fleet 100 90 80 70 60 50 40 30
Page 41 and 42: # 8 vehicle groups (see Section 2.2
Page 43 and 44: Truck Fleet (5-axles or more) Numbe
Page 45 and 46: Other Grain Bodies Tank Truck, Liqu
Page 47 and 48: Number of Vehicles 1,400,000 1,200,
Page 49 and 50: - household moving and office furni
Page 51 and 52: # For all truck + trailer combinati
Page 53 and 54: 6.0 Analysis of the 5-Axles or More
Page 55 and 56: Table 6.2-1 1997 Truck Fleet (@ 5-a
Page 57 and 58: # For the 3-S2 group, - One-fifth o
Page 59 and 60: Table 6.2-3 1997 Truck Fleet (@ 5-a
Page 61 and 62: 7.0 Analysis of Weights, Dimensions
Page 63 and 64: 7.2 Observations on Specific Truck
Page 65 and 66: # (3 + 2) Basic Enclosed Van [pop =
Page 67 and 68: - Annual VMT—mixed. # (3-S2) Insu
Page 69 and 70: - half (40-60%) operate mostly (80-
Page 71 and 72: # (3-S3) Tank Trucks for Liquids or
Page 73 and 74: Body Type Low Boy Platform Basic Pl
Page 75 and 76: Body Type Low Boy Platform Basic Pl
Page 77 and 78: There has been a substantial increa
Page 79 and 80: 3-S2 Basic Enc. Van 3-S2 Refrigerat
Page 81 and 82: 7.5.2 Changes in Truck Lengths by 1
Page 83 and 84: 3-S2 Basic Enc. Van 3-S2 Refrigerat
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7.5.3 Changes in Truck Weights # ME
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3-S2 Basic Enc. Van 3-S2 Refrigerat
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Table 7.5.3-2 Comparison of Mean "A
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Average Weight (lbs) 80,000 70,000
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Comparison of Mean Maximum Payload
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Comparison of Mean "Average" Payloa
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8.0 Analysis of Vehicle Miles of Tr
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CHANGES BETWEEN 1992 AND 1997 Figur
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Mean VMT 100,000 90,000 80,000 70,0
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3-S2 Basic Enc. Van 3-S2 Refrigerat
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Appendix A Regional Distributions o
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1997 Truck Fleet Traffic Region: No
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1997 Truck Fleet Traffic Region: So
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Appendix B Regional Distributions o
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Not to Scale Truck + Trailer @ 6 or
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Not to Scale $ $ Tridem Axle Tracto
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2-S1-2 STAA Tractor + Double Traile
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Not to Scale $ $ $ $ $ $ Base Scale
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1997 Truck Fleet (@ 5-axles or more
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Page 125 and 126:
Appendix C Detailed Body Type Analy
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Appendix C 1997 Truck Fleet (@ 5-ax
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Page 135 and 136:
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Appendix E Weights, Dimensions, and
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VEHICLE TYPE: 3-S2 BODY TYPE: LOW B
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VEHICLE TYPE: 3-S2 BODY TYPE: LIVES
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VEHICLE TYPE: 3-S2 BODY TYPE: INSUL
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VEHICLE TYPE: 3-S2 BODY TYPE: BASIC
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VEHICLE TYPE: 3-S2 BODY TYPE: AUTOM
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VEHICLE TYPE: 3-S2 BODY TYPE: DUMP
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VEHICLE TYPE: 3-S2 BODY TYPE:TANK T
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VEHICLE TYPE: 3+2 BODY TYPE: BASIC
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VEHICLE TYPE: 3+2 BODY TYPE: POLE L
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VEHICLE TYPE: 3+2 BODY TYPE: DUMP T
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VEHICLE TYPE: 3-S3 BODY TYPE: LOW B
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VEHICLE TYPE: 3-S3 BODY TYPE: INSUL
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VEHICLE TYPE: 3-S3 BODY TYPE: POLE
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VEHICLE TYPE: 3-S3 BODY TYPE: DUMP
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VEHICLE TYPE: 2-S1-2 BODY TYPE: BAS
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VEHICLE TYPE: 2-S1-2 BODY TYPE: BAS
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Appendix F Average Payload Weights
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VEHICLE TYPE: 3-S2 AVERAGE PAYLOAD
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VEHICLE TYPE: STAA (2-S1-2) AVERAGE
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VEHICLE TYPE: 3-S2 MAXIMUM PAYLOAD
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VEHICLE TYPE: STAA (2-S1-2) MAXIMUM
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Regional Comparison of Mean Tare (E
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Regional Comparison of Mean Average
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Regional Comparison of Percent of T
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Regional Comparison of Percent of T
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Regional Comparison of the Mean Ann
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Regional Comparison of the Percent
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Appendix H Data Analysis Methodolog
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Configuration AXLRE Code 1997 4-S1
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Vehicle Body Type VIUS Variables of
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Major Body Type Groups and their As
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Since the analysis was focused on t
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Industrial "waste" water Hazardous
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Simple Statistics In this analysis,
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PRNPRO 164-165 WANNMIL 166-178 VG 1
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Proc GLM data=dataset name; Class V
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RUN; H - 19
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U.S. DEPARTMENT OF COMMERCE BUREAU
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ITEM 5 Which best describes this ve
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ITEM 11 What type of cab does this
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ITEM 18 What percent of 1997 mileag
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. ITEM 27 Which of the following be
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ITEM 29 a. At any time during 1997
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