Freeway Management and Operations Handbook

Description of Figure 1-3: Typical Plots of Volume vs. Time-of-Day

This graph shows vehicle volume per lane on the left axis, ranging from 0 to 2,500 vehicles. Time of day is shown on the bottom axis, ranging from 12 AM to 12 AM of the next day. Three colored curves are plotted and show the growth in this daily pattern over time: a green curve represents the initial condition, red represents a peak spreading period, and blue represents two direction traffic. All three curves peak near 8 AM, with both peak and two direction surpassing initial, showing a growth in peak period. Another peak is at 6 PM for two direction traffic, showing a reverse commute or suburb-suburb commute.

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Freeway Management and Operations Handbook
Back to Chapter 1 Page 1 Description of Figure 1-3: Typical Plots of Volume vs. Time-of-Day This graph shows vehicle volume per lane on the left axis, ranging from 0 to 2,500 vehicles. Time of day is shown on the bottom axis, ranging from 12 AM to 12 AM of the next day. Three colored curves are plotted and show the growth in this daily pattern over time: a green curve represents the initial condition, red represents a peak spreading period, and blue represents two direction traffic. All three curves peak near 8 AM, with both peak and two direction surpassing initial, showing a growth in peak period. Another peak is at 6 PM for two direction traffic, showing a reverse commute or suburb-suburb commute.
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