Active Traffic Management: The Next Step in Congestion Management

Figure 17: Speed-volume relationship of temporary shoulder use in Germany

Figure 17. Graph of the speed-volume relationship of temporary shoulder use in Germany. Volume, in vehicles per hour, is on the x axis and speed, in kilometers per hour, is on the y axis. The line for two lanes and no speed limit goes from 140 kilometers per hour at 0 vehicles per hour to 80 kilometers per hour at 3,200 vehicles per hour. The line for three lanes with a speed limit of 100 kilometers per hour goes from 118 kilometers per hour at 0 vehicles per hour to 80 kilometers per hour at 5,200 vehicles per hour.

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