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Seasonality of Transportation Data

Figure 10

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The weighted monthly minutes traveled to work by solo drivers who live and work in Springfield, Massachusetts are shown in Figure 10a. As can be expected, their travel times are shorter than the average travel times for the whole sample that lives and works in Springfield (shorter still than the county-wide sample depicted in Figure 4a). There are minimal differences in travel times from month to month and between years of data with the exception of noticeably longer auto travel times in October 2001.

FIGURE 10a - Minutes Traveled to Work by Solo Drivers that Live and Work in Springfield, MA

Figure 10b shows the weighted monthly travel times of carpoolers (about 11% of the respondents that live and work in Springfield). These people all indicated that at least one other person accompanied them on their journey to work. As expected, most of these points are lower than the average travel time for respondents that live and work in Springfield. However, there is more variability from month to month. The shortest travel time for this group is in February and the longest travel time is in November.

FIGURE 10b - Minutes Traveled to Work by Carpoolers that Live and Work in Springfield, MA

The weighted monthly travel times of bus riders that live and work in Springfield are depicted in Figure 10c. The bus system including Springfield is the second largest in New England, but less than five percent of these urban respondents indicated that they use the bus for their journey to work. There are no other forms of public transit in the area. Travel time by bus is much longer than for drive alone cars or carpools.

FIGURE 10c - Minutes Traveled to Work by Bus Riders that Live and Work in Springfield, MA

The three year average for each mode along with the average travel time for respondents that live and work in Springfield is provided in Figure 10d.

FIGURE 10d - Average Minutes Traveled to Work by Three Category Mode Choice of People that Live and Work in Springfield, MA

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Updated: 04/28/2011
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