Uses of National Household Travel Survey Data in - NHTS Home ...

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Special Population Groups Trip-Chaining Behavior of Older People: Effects of Medical Conditions and Urban Form Authors: Noland, Robert B; Schmocker, Jan-Dirk; Bell, Michael G H Transportation Research Board - 500 Fifth Street, NW Washington, DC 20001 TRB 87th Annual Meeting Compendium of Papers DVD Transportation Research Board 87th Annual Meeting 2008 Abstract: This paper examines the relationship between the trip complexity of older people of (60 years and older), as measured by the number of stops they make in a tour. The data used for this analysis is the tripchaining dataset of the 2001 National Household Travel Survey, which is a comprehensive survey of travel behavior in the United States. Our analysis focuses on understanding the difference in the behavior of older people compared to earlier work done on this same data for the entire sample (Noland and Thomas, in press). Our focus is both on examining the effect of urban form, as proxied by population density, and the effect of medical conditions of older people on their travel. We break down the age cohorts into sub-groups that span the range of our population of those older than 60. This helps in understanding distinctions between the travel of the “old-old” and the “young-old”. An ordered probit model is used to conduct a multivariate analysis of these effects on trip complexity. Our results yield some interesting findings and both similarities and differences in the travel behavior of older people compared to the entire sample. Subject areas and Index Terms Highways; Planning and Forecasting; Safety and Human Factors; Society; I72: Traffic and Transport Planning Age groups; Aged; Diseases and medical conditions; Health; Health care; Population density; Travel behavior; Trip chaining; National Household Travel Survey Availability: Transportation Research Board Business Office 28
Special Population Groups Older Drivers' "High Per-Mile Crash Involvement": The Implications for Licensing Authorities Authors: Eberhard, John Traffic Injury Prevention Issue: 4 2008 Abstract: The study objective is to determine what role motor vehicle administrators have in dealing with older drivers based on their crash risk and mobility needs. This article reviews both the recent crash, injury, and exposure trends from the National Household Travel Survey and other sources to help motor vehicle administrators set priorities in meeting the safety and mobility needs of older persons. Older drivers have a higher crash risk per mile driven. The "risk" of dying in a crash is more likely attributable to the frailty of older drivers than the risks associated with the functional limitations that accompany aging. The research literature indicates that older drivers are not a risk to other road user age groups but primarily to themselves. Furthermore, recent fatality data indicate that the death rates for older persons, particularly those over 80 years of age, have been declining over the last 10 years. These results differ from recent fatality trend projections that predicted a significant increase in traffic fatalities associated with an aging driver population. Drivers over 80 are more likely to have a crash on a per licensed driver basis. There is new evidence, however, that only older drivers who drive infrequently are at increased risk. These drivers drive relatively short distances on local streets with complex traffic situations. Most of these drivers are also likely to be experiencing multiple functional limitations. Since those who stop driving reduce their mobility by over one half, motor vehicle administrators need to work more closely with the state departments of aging and transportation providers to help ensure mobility options for those who can no longer drive. The author concludes that older driver motor vehicle crashes are not a significant threat to other road users in vehicles or as pedestrians. It is the older drivers and his vehicle occupants who are at higher risk of dying when in a crash. Current evidence is that the drivers who pose the greatest risks are the teenage grandchildren of this older generation. Therefore, motor vehicle administrators can support their stand against increasing the licensing requirements of older drivers. When dealing with the older driver population they need to weigh the consequences of having someone stop driving and assist other responsible agencies in fostering sustained mobility for those who stop driving. Subject areas and Index Terms Administration and Management; Highways; Policy; Safety and Human Factors; I10: Economics and Administration; I83: Accidents and the Human Factor Administration; Aged drivers; Collisions; Driver licensing; High risk drivers; Mobility; Policy; Safety Availability: Find a library where document is available Order URL: http://worldcat.org/oclc/49192340 29
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Page 7 and 8: Bike and Pedestrian Studies Extent
Page 9 and 10: Bike and Pedestrian Studies Modelin
Page 11 and 12: Demographic Trends Demographics Mat
Page 13 and 14: Energy Consumption Estimating Trans
Page 15 and 16: Energy Consumption Vehicle Capacity
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Travel Behavior National Household
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Travel Behavior National Transport
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Travel Behavior Time-of-Day Choice
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Travel Behavior Comparison of Vehic
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Travel Behavior Multinomial Modelin
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Travel Behavior Transferability of
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Travel Behavior Effect of Variation
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Travel Behavior A Comparative Analy
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Travel Behavior Changes in the U.S.
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