1995 NPTS Databook - National Household Travel Survey - Oak ...

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INTRODUCTIONuse. A trip was segmented when more than onemode was used on that trip and one of themodes was public transit (bus, subway,elevated rail, commuter train, or streetcar). Atrip was also segmented when there was atransfer on the same public transit mode (e.g.,bus to bus). When a trip was given segmentedtreatment, certain data, such as mode andtravel time, were collected for each segment.For a complete discussion of segmented trips,see the material preceding Table 4.21 inChapter 4 and Appendix H.Trip purposeThe 1995 survey collected much more detailthan the other surveys on trip purpose – 17purposes in 1995 compared with 11 in all priorsurveys except 1977. Among the changesbetween 1990 and 1995:• The 1990 purpose “To or from work” hasbeen divided into two purposes: “To work”and “Return to work”vehicle is 1992, this vehicle was 4 years old forthe 1995 survey. If the difference between themodel year of a vehicle and the survey yearwas less than zero, the vehicle age wascategorized as “1 year old or younger.” Allearlier data related to vehicle age were revisedby this approach and therefore may not agreewith data published earlier.1.8 REPORT ORGANIZATIONThe primary purpose of this Databook is toserve as a statistical compendium of the 1995NPTS.In Chapter 2, estimates of annual travel datafrom the 1995 NPTS are reported. Estimatesreported include total person miles of travel(PMT) and total vehicle miles of travel (VMT).These estimates are broken down by thedifferent data sources, such as the travel day ortravel period, within the 1995 NPTS.• “School or church” has been divided intotwo distinct 1995 purposes, “School” and“Church”• Five new purposes were added in 1995:“Take someone somewhere,” “Picksomeone up,” “Went out to eat,” “Changemeans of transportation,” and “Home.”The 1990 purpose “Pleasure Driving” wasdeleted.The 1995 data has been coded in a way suchthat the 1990 purpose can be determined inorder to allow comparisons between 1990 and1995 measures.Vehicle ageVehicle age in this publication is calculated asthe difference between the model year and1996. For example, if the model year of aChapter 3 contains demographic characteristicsand household vehicle ownership patterns thatshape travel activities at the individual and thehousehold level. The remainder of theDatabook consists of the following:• Chapter 4 discusses data on person tripsand travel.• Chapter 5 includes analysis of vehicletravel, in terms of the number of vehicletrips and VMT.• Chapter 6 presents data on journey-toworkand work-related trips.• Chapter 7 reports on ride-sharing andvehicle occupancy distributions.1-10NATIONWIDE PERSONAL TRANSPORTATION SURVEY
• Chapter 8 presents data on the travelbehavior of special population subgroups –the elderly, women, low-incomeindividuals, pedestrians, and transit riders.The appendices contain material needed by theNPTS data users, as follows:• Appendix A: Travel Concepts andGlossary of Terms• Appendix B: Changes in the 1995 NPTSSurvey Methodology and Their ProbableImpacts• Appendix C: Weight Calculations• Appendix D: Standard Error Tables• Appendix J: Procedure to Adjust 1983 and1990 Income Categories into 1995 DollarsEach chapter has a similar format, whichconsists of the following elements:• A diagram identifies the main subject ofthe chapter in the context of all NPTS data.• Key statistics are displayed in a tree format.For example, the chapter on person tripsand person miles has two trees – one bytrip mode and the other by purpose.• A chapter table of contents, list oftables, and list of figures are next. Forthe reader’s convenience, they are listed atthe chapter level.INTRODUCTION• Appendix E: Adjustment of 1990 TravelData• Appendix F: Differences in Workers andCommute Trips Between 1990 and 1995NPTS• Appendix G: Differences in MetropolitanArea Definitions Between 1983 and 1995NPTS• Appendix H: Segmented Trips in NPTS• Appendix I: Revised Average Annual MilesDriven per Driver• Tables, figures, and the accompanyinganalysis are presented, in subsections ofeach chapter, generally arranged by personcharacteristics (e.g., age, sex, driver licensestatus), household characteristics (e.g.,income, place of residence), tripcharacteristics (e.g., mode, purpose,length), and temporal patterns (e.g., time ofday, day of week).It should be noted that totals in some tablesmay not add due to rounding.The title of the chapter and the subsectionswithin each chapter are indicated on the edgeof each page alongside the thumb tab.NATIONWIDE PERSONAL TRANSPORTATION SURVEY 1-11
Page 1 and 2: ORNL/TM-2001/248U.S. DEPARTMENT OF
Page 3 and 4: TABLE OF CONTENTSCHAPTER 1INTRODUCT
Page 5 and 6: APPENDICESAppendix A Travel Concept
Page 7 and 8: CHAPTER 1INTRODUCTION1INTRODUCTIONN
Page 9 and 10: LIST OF FIGURESDISTINCTION BETWEEN
Page 11 and 12: CHAPTER 1INTRODUCTIONPOLICYMAKERS r
Page 13 and 14: As in the previous surveys, in the
Page 15 and 16: public’s opinion of transportatio
Page 17 and 18: there is no way of knowing which tr
Page 19: percent of total VMT; travel period
Page 23 and 24: CHAPTER 2ESTIMATES OF TOTAL TRAVEL2
Page 25 and 26: LIST OF TABLESTABLE 2.1 TRAVEL SUMM
Page 27 and 28: CHAPTER 2ESTIMATES OF TOTAL TRAVELE
Page 29 and 30: was acquired. Thus, an annual estim
Page 31 and 32: Table 2.1 provides summary statisti
Page 33 and 34: TABLE 2.2TOTAL PERSON MILES OF TRAV
Page 35 and 36: The distribution of travel by data
Page 37 and 38: Nearly 80% of all travel was report
Page 39 and 40: TABLE 2.6TOTAL PERSON MILES OF TRAV
Page 41 and 42: TABLE 2.7TOTAL VEHICLE MILES OF TRA
Page 43 and 44: In 1995, most household transportat
Page 45 and 46: CHAPTER 1IntroductionCHAPTER 2Total
Page 47 and 48: CHAPTER 3DETERMINANTS OF TRAVEL3DET
Page 49 and 50: 1995 VEHICLES BY VEHICLE TYPE(THOUS
Page 51 and 52: LIST OF TABLESTABLE 3.1TABLE 3.2TAB
Page 53 and 54: CHAPTER 3.DETERMINANTS OF TRAVELTRA
Page 55 and 56: Dramatic changes in demographics an
Page 57 and 58: FIGURE 3.1CHANGES IN SUMMARY DEMOGR
Page 59 and 60: Table 3.2 shows that the population
Page 61 and 62: FIGURE 3.4DISTRIBUTION OF DRIVER’
Page 63 and 64: The percentage of both males and fe
Page 65 and 66: Between 1969 and 1995, the average
Page 67 and 68: Employment status influences the av
Page 69 and 70: TABLE 3.8NUMBER OF HOUSEHOLDS BY HO
Page 71 and 72:
TABLE 3.9DISTRIBUTION OF HOUSEHOLDS
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The number of vehicles per househol
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FIGURE 3.10DISTRIBUTION OF HOUSEHOL
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Figure 3.11 shows the share of hous
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In 1995, the average mileage driven
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CHAPTER 1IntroductionCHAPTER 2Total
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CHAPTER 4PERSON TRIPS AND PERSON MI
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1995 PERSON TRIPS AND PERSON MILES
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TABLE 4.21TABLE 4.22TABLE 4.23TABLE
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CHAPTER 4PERSON TRIPS AND PERSON MI
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According to Public Transit in Amer
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FIGURE 4.1SUMMARY OF NATIONAL TRAVE
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Both males and females increased th
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The number of average daily person
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FIGURE 4.3AVERAGE DAILY PERSON TRIP
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FIGURE 4.4AVERAGE PERSON TRIP LENGT
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TABLE 4.7NUMBER OF PERSON TRIPS BY
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TABLE 4.8AVERAGE DAILY PERSON TRAVE
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TABLE 4.9NUMBER OF PERSON TRIPS TAK
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TABLE 4.11NUMBER OF PERSON TRIPS TA
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FIGURE 4.6PERCENTAGE OF PERSON TRIP
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TABLE 4.14AVERAGE DAILY PERSON TRIP
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In 1995, most households were compr
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Figure 4.9 and Table 4.16 illustrat
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TABLE 4.18AVERAGE TRIP LENGTH BY 19
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TABLE 4.20AVERAGE PERSON TRIP LENGT
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TABLE 4.21STATISTICS ON SEGMENTED P
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FIGURE 4.10STATISTICS ON SEGMENTED
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TABLE 4.23STATISTICS ON DAILY PERSO
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FIGURE 4.11STATISTICS ON DAILY PERS
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FIGURE 4.12DISTRIBUTION OF PERSON T
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Page 137 and 138:
TABLE 4.28NUMBER OF PERSON MILES OF
Page 139 and 140:
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Tables 4.31-4.34 provide day-of-wee
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FIGURE 4.14DISTRIBUTION OF PERSON T
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TABLE 4.35NUMBER OF WEEKEND PERSON
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Chapter 5Vehicle Trips and Vehicle
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List of TablesTABLE 5.1 STATISTICS
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CHAPTER 5VEHICLE TRIPS AND VEHICLE
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5.3 TRIP CHARACTERISTICSHousehold v
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TABLE 5.1STATISTICS ON VEHICLE TRAV
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TABLE 5.2NUMBER OF VEHICLE TRIPS BY
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FIGURE 5.2DISTRIBUTION OF VEHICLE T
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TABLE 5.4NUMBER OF VEHICLE MILES OF
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Tables 5.6 and 5.7 show the length
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TABLE 5.7AVERAGE TIME (MINUTES) SPE
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Individuals 65 years of age and ove
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TABLE 5.10ANNUAL VEHICLE MILES OF T
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FIGURE 5.5ANNUAL VEHICLE MILES OF T
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NATIONAL PERSONAL TRANSPORTATION SU
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FIGURE 5.6ANNUAL VEHICLE TRIPS PER
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NATIONAL PERSONAL TRANSPORTATION SU
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As shown in Table 5.17, the greates
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FIGURE 5.8AVERAGE VEHICLE TRIP LENG
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TABLE 5.19NUMBER OF VEHICLE TRIPS A
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TABLE 5.21NUMBER OF WEEKEND VEHICLE
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On any day of the week, individuals
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Most trips were taken between 9 a.m
Page 193 and 194:
CHAPTER 6JOURNEY TO WORK AND WORK-R
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1995 JOURNEY TO WORK PERSON TRIPS A
Page 197 and 198:
LIST OF TABLESSUMMARY STATISTICS ON
Page 199 and 200:
CHAPTER 6JOURNEY TO WORK AND WORK-R
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made as the driver of an automobile
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FIGURE 6.2SUMMARY STATISTICS ON JOU
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FIGURE 6.3DISTRIBUTION OF WORKERS B
Page 207 and 208:
Between 1990 and 1995, the number o
Page 209 and 210:
Traffic congestion is typically a m
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FIGURE 6.5NUMBER OF COMMUTE TRIPS P
Page 213 and 214:
Workers designated as living in a S
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TABLE 6.9STATISTICS ON JOURNEY TO W
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The automobile was used for over 60
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FIGURE 6.7DISTRIBUTION OF JOURNEY T
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TABLE 6.12STATISTICS ON WORK-RELATE
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TABLE 6.13JOURNEY TO WORK PERSON TR
Page 225 and 226:
TABLE 6.14DISTRIBUTION OF JOURNEY T
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TABLE 6.16NUMBER OF SEGMENTED JOURN
Page 229 and 230:
TABLE 6.18NUMBER OF PERSON TRIPS (M
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CHAPTER 1IntroductionCHAPTER 2Total
Page 233 and 234:
CHAPTER 7VEHICLE OCCUPANCY AND RIDE
Page 235 and 236:
1995 VEHICLE TRIPS BY VEHICLE TYPE
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LIST OF TABLESTABLE 7.1 AVERAGE VEH
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CHAPTER 7VEHICLE OCCUPANCY AND RIDE
Page 241 and 242:
Between 1977 and 1995, the average
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FIGURE 7.1AVERAGE VEHICLE OCCUPANCY
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As shown in Table 7.3, excluding th
Page 247 and 248:
Household characteristics affect ve
Page 249 and 250:
As shown in Table 7.5, households w
Page 251 and 252:
Table 7.6 shows that the highest av
Page 253 and 254:
As noted in Table 7.1, the lowest i
Page 255 and 256:
On the average, commute vehicle occ
Page 257 and 258:
CHAPTER 8TRAVEL BEHAVIOR OF POPULAT
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LIST OF TABLESTABLE 8.1 PERSON TRAV
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CHAPTER 8TRAVEL BEHAVIOR OF POPULAT
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As the baby boom generation approac
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FIGURE 8.1A COMPARISON OF PERSONAL
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FIGURE 8.2COMPARISON OF PERSON MILE
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The elderly generally either took s
Page 271 and 272:
Tables 8.6-8.8 and Figures 8.3-8.6
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In 1995, employed women averaged ta
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FIGURE 8.5AVERAGE DAILY PERSON TRIP
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TABLE 8.9PERSON TRAVEL STATISTICS F
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FIGURE 8.7DISTRIBUTION OF AVERAGE A
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TABLE 8.12AVERAGE ANNUAL PERSON TRI
Page 283 and 284:
Page 285 and 286:
TABLE 8.16PMT PER PERSON FOR PUBLIC
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APPENDIX ATRAVEL CONCEPTS AND GLOSS
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APPENDIX A.TRAVEL CONCEPTS AND GLOS
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GLOSSARY OF TERMSThis glossary prov
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Van A privately owned and/or operat
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50,000. In addition, contiguous cou
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SCHOOL OR CHURCHSchool/Church This
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WeekendWorkerWeekend is defined as
Page 301 and 302:
Appendix BChanges in the 1995 NPTS
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APPENDIX B.CHANGES IN THE 1995 NPTS
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APPENDIX CWEIGHT CALCULATIONSCWEIGH
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APPENDIX C. WEIGHT CALCULATIONS 1WE
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APPENDIX DSTANDARD ERROR TABLESDSTA
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APPENDIX DSTANDARD ERROR TABLESTHE
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TABLE 4.5AVERAGE PMT PER PERSON BY
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Page 317 and 318:
TABLE 5.10Annual Vehicle Miles of T
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TABLE 5.14ANNUAL VEHICLE MILES OF T
Page 321 and 322:
TABLE 7.4NUMBER OF VEHICLE TRIPS BY
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TABLE 8.8DAILY PMT PER PERSON FOR W
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Page 327 and 328:
Appendix EADJUSTMENT OF 1990 TRAVEL
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APPENDIX E.ADJUSTMENT OF 1990 TRAVE
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TABLE E.1ANNUAL PERSON TRIPS PER PE
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TABLE E.2ESTIMATED TRAVEL CHANGES F
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TABLE E.4TABLE 4. 1990 TRAVEL DATA
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APPENDIX FDIFFERENCES IN WORKERS AN
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Appendix F.Differences in Workers a
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TABLE F.2NUMBER OF WORKERS (IN 000)
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indicating that part of the differe
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TABLE F.4PERCENT OF NON-WORKERS COM
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APPENDIX GDIFFERENCES IN METROPOLIT
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APPENDIX G.DIFFERENCES IN METROPOLI
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APPENDIX HSEGMENTED TRIPS IN NPTSHS
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APPENDIX H.SEGMENTED TRIPS IN NPTSW
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APPENDIX IREVISED AVERAGE ANNUAL MI
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APPENDIX I.REVISED AVERAGE ANNUAL M
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APPENDIX JPROCEDURE TO ADJUST 1983
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APPENDIX JESTIMATES OF TOTAL TRAVEL
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TABLE J.2NUMBER OF HOUSEHOLDS AND T
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FIGURE J.1FITTED POLYNOMIAL CURVE A
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TABLE J.3REVISED 1990 INCOME CATEGO
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