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Seasonality of Transportation Data

Figure 13

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Mode departure time by quarter is shown in Figure 13. Similar to the other sets of graphs, the scale on these three graphs is the same to allow for easy comparisons. Here, the seasonal quarterly lines are relatively flat. Aggregated Springfield workers leave at 7:20am each day using seasonal quarters (Figure 13b). The aggregated line in Figure 13a showing departure times for calendar quarters is not flat-in the first quarter, Springfield workers leave at approximately 7:28 p.m. in the first quarter and at 7:16 a.m. in the second quarter. Strikingly, bus transit riders leave later in the first quarter than the average and much earlier than the average in the second and third quarters. In contrast, carpoolers leave much later than average in the third quarter.

FIGURE 13a - Departure Time to Work by Three Category Mode Choice per Calendar Quarter of People that Live and Work in Springfield, MA

Mode departure time by quarter is shown in Figure 13. Similar to the other sets of graphs, the scale on these three graphs is the same to allow for easy comparisons. Here, the seasonal quarterly lines are relatively flat. Aggregated Springfield workers leave at 7:20am each day using seasonal quarters (Figure 13b). The aggregated line in Figure 13a showing departure times for calendar quarters is not flat-in the first quarter, Springfield workers leave at approximately 7:28 p.m. in the first quarter and at 7:16 a.m. in the second quarter. Strikingly, bus transit riders leave later in the first quarter than the average and much earlier than the average in the second and third quarters. In contrast, carpoolers leave much later than average in the third quarter.

FIGURE 13b - Departure Time to Work by Three Category Mode Choice per Seasonal Quarter of People that Live and Work in Springfield, MA

Mode departure time by quarter is shown in Figure 13. Similar to the other sets of graphs, the scale on these three graphs is the same to allow for easy comparisons. Here, the seasonal quarterly lines are relatively flat. Aggregated Springfield workers leave at 7:20am each day using seasonal quarters (Figure 13b). The aggregated line in Figure 13a showing departure times for calendar quarters is not flat-in the first quarter, Springfield workers leave at approximately 7:28 p.m. in the first quarter and at 7:16 a.m. in the second quarter. Strikingly, bus transit riders leave later in the first quarter than the average and much earlier than the average in the second and third quarters. In contrast, carpoolers leave much later than average in the third quarter.

FIGURE 13c - Departure Time to Work by Three Category Mode Choice per Quarter of People that Live and Work in Springfield, MA

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Updated: 04/28/2011
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