Problem $2$:

Consider the case of a three$-$phase signal, with $t_L=4\frac{s}{?}$ phase, a saturation headway of $2\mathrm{.}4\frac{s}{v}eh,$ a PHF of $0\mathrm{.}95,$ and $Vc=1200ve\frac{h}{h}.$ Compute and analyze the desirable cycle lengths for the following target ratios $(\frac{v}{c}).$ Indicate the feasibility of each case.

a$)\frac{v}{c}=1$

b$)\frac{v}{c}=0\mathrm{.}9$

c$)\frac{v}{c}=0\mathrm{.}7$

d$)\frac{v}{c}=0\mathrm{.}5$