Figure 1: Number of Congested Hours per Weekday: Monthly Average

Hours per day

Excel | CSV | Graphic Version

BTS Technical Report: Seasonal Variation in Traffic Congestion: A Study of Three U.S. Cities

by Jeffery Memmott, Ph.D. and Peg Young, Ph.D.

PDF

Most urban areas of the country face rising congestion levels as increasing volumes of vehicular traffic exceed the capacity of the transportation...

Figure 6: Monthly Variation in Los Angeles' a.m. and p.m. Congested Hours due to Seasonal Factors

Difference in congested hours per day from the trendline

Excel | CSV | Graphic Version

Figure 2: Monthly Average of Congested Hours per Weekday in Los Angeles

Excel | CSV | Table Version

SOURCE: Calculated from data used in preparation of Federal Highway Administration, Urban Congestion Report, April 2004-April 2007.

Figure 6: Monthly Variation in Los Angeles' a.m. and p.m. Congested Hours due to Seasonal Factors

Excel | CSV | Table Version

SOURCE: Calculated from data used in preparation of Federal Highway Administration, Urban Congestion Report, April 2004 -...

Figure 8: Monthly Variation in Houston's a.m. and p.m. Congested Hours due to seasonal Factors

Excel | CSV | Table Version

SOURCE: Calculated from data used in preparation of Federal Highway Administration, Urban Congestion Report, April 2004 -...

Figure 4: Monthly Variation in Chicago's a.m. and p.m. Congested Hours due to Seasonal Factors

Difference in congested hours per day from the trendline

Excel | CSV | Graphic Version

Figure 1: Number of Congested Hours per Weekday: Monthly Average

Excel | CSV | Table Version

NOTE: The number of congested hours per day are not directly comparable across different urban areas because data collection coverage on the freeway system in...

Figure 3: Monthly Variation in Weekday Congestion due to Seasonal Factors: Houston, Los Angeles, and Chicago

Excel | CSV | Table Version

NOTE: Each bar represents the degree of departure from the underlying long-term trendline. For example, the December...

Figure 5: Monthly Variation in Chicago's Weekday and Weekend Congested Hours due to Seasonal Factors

Excel | CSV | Table Version

SOURCE: Calculated from data used in preparation of Federal Highway Administration, Urban Congestion Report, April 2004 -...