![]() ![]() Children under 14 make a higher percentage of their trips by bicycle (5–7%) and public transit (1–2%) than other groups. Public transit and bicycling trips for social and recreational purposes are comparatively rare. We see a slight increase in walking from 2001 to 2009 across all age categories. Children are the most likely to walk, followed by high school students and elderly people. Young adults and adults make a smaller percentage of trips by walking than other groups for all three years. Walking is the next most common mode of social and recreational travel, although it represents less than 20 percent of total trips in 20. As Figure 37 shows, social trips comprise a higher percentage of tripmaking among both teens and young adults than adults.įigure 36: Average Daily Social Trips by Age Group (1990, 2001, and 2009) The number of social trips declined slightly from 2001 to 2009, as did the number of trips overall. High school students and young adults make the highest number of social trips, and adults make the fewest. 29 Social trip making is relatively consistent across age categories, ranging from 0.8 to 1.3 trips per day. ![]() Descriptive Statisticsįigure 36 illustrates the average daily social trips taken by different age groups in each survey year. While the use of the Poisson model may obscure many of the trade-offs made between the various non-SOV modes of transportation, the following model provides insight into the choice to drive alone for social purposes. We chose this modeling form due to computational limitations of estimating a multinomial mode choice model with a very large (three data years, combined) dataset. For this model, we estimated a Poisson regression model of the share of social trips made by single-occupancy vehicle (SOV), rather than use any other mode of transportation. We include this variable because social trips taken on the weekend may differ in both frequency and type from social trips taken on a weekday.Īs in the previous analytical sections, we estimated a quasi-cohort model of mode choice for social trips. The weekend variable identifies whether the respondent took the trip on Saturday or Sunday. ![]() Mode choice varies greatly by distance: for example, people become much less likely to choose non-motorized forms of transportation for longer trips as a result, we use the natural log of distance.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |