Example $3$:

On a specific section of the highway, studies showed that speed$-$

density relations can be explained by:

$u=u_f[1-(\frac{k}{k_j}{)}^{3\mathrm{.}5}]$

$q_{\text{c}\text{a}\text{p}}=3800ve\frac{h}{h}$ and $k_j=140ve\frac{h}{k}m.$ What is the space mean speed of

the traffic at capacity? What is the free flow speed?