A Density-Based Ramp Metering Model Considering Multilane Context in Urban Expressways

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/mpe/volume-2017/4909363/figures/4909363.fig.004a.svgz" name="4909363.fig.004a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>“Speed-density” scatter diagram</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/mpe/volume-2017/4909363/figures/4909363.fig.004b.svgz" name="4909363.fig.004b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>“Traffic volume-density” scatter diagram</td></tr></table>

<div>Scatter diagram of traffic flow parameter.</div>

Mathematical Problems in Engineering

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Figure 4

Figure 4: A Density-Based Ramp Metering Model Considering Multilane Context in Urban Expressways 