Question $1$:four$-$lane freeway segment $($two lanes per direction$)$ is to be designed for a directional volume of $3,000$ veh$/$h$.$ It is estimated that the segment will have a free$-$flow speed of $100$ km$/$h$.8\%$ hea visitors traveling on it $($ie$..$This is a $3$ km long segment consisting of a $2\%$ upgrade. The peak$-$hour factor is estimated to be $0\mathrm{.}90.$ Determine the density and the LOS.