Consider the one$-$way arterial shown in Figure below with the link lengths indicated. Assuming no vehicles queued at the signals, the ideal offsets can be determined if the platoon speed is known. For the purpose of illustration, a desired speed of $60f\frac{t}{sec}$ will be used. Assume the cycle length is $60$ seconds. Calculate the Ideal Offsets $($relative to Previous Intersection$)$ and Offsets Relative to Primary Clock.

Hint $1$: Ideal Offset in second $($t$/$deei$)=\frac{L}{S}$

where $L=$ distance between signalized intersections, $ft,($it is given$)$;

and $S=$ average speed, $f\frac{t}{sec}($it is given$)$

Hint $2$:$-$Offset Reiative to Primary Clock is measured from intersection $1$ since it is one$-$way street going left to right, hence it is shown as $0$