$3$ationti$\mathrm{.}25$ ptu$)$: $($C$.\mathrm{.}03$: $50\%,$ CLO$04$: $50\%$

The Riyadh metro consits of six main lines, only two of the lines will be consider in this puestioe as uhowe in the following figure.

The first line $($i$.$e$.$ Red I ine$)$ is along King Abdullah rad and ttarts from the King Fahd International Stadium $($KFIS$)$ and ends at the King Saud University $($KSU$)$ with a length of $253km.$ The ether one $($ie$.$ Blue Line$)$ is along the Al$-$Otaya street with a lengh of $38km.$

The toul area around the two lines is $S-105k{m}^2$ and popolation: $P=2\mathrm{.}307,750$ inhabiants.

$4\mathrm{.}1)$ Asume that that So $-0\mathrm{.}785k{m}^2.$ Calculate the following:

a$)$ The network denity $D(4$ pts$)$

b$)$ The network extensiveness $E(4$ pts$)$

c$)$ The network area coverage $AC(4$ pts$)$

$4\mathrm{.}2)$ The KSU is considering consecting the Red Line' station located in its endowment $($badeJ$-2$i$.$f$)$ with the campus by a public transir line $($i$.$e$,$ buses$),$ its length equals $12km$ is ane direction. The average bus speed equals $25k\frac{m}{h}.$ The watal of $14$ buses is assiged to the line. The capucity of every vehicle equals $60.$ Calculate the following:

$2.$ turnaround time $($ia minules$)[3$ Marks$)$

b$.$ line capucity $($in spaces hour$)[3$ Marka$|$

a$.$ Reparting to the madium invide the campes, when there is a makch it may atrast $1,200$ poople wive Justify your anvwer with number. $[4$ Marks$]$

$4.$ Defiee the maximum Load Section $($Mi$.$S$)$ and give one wage: $[3$ Marks$)$