$22-1.$ A semi$-$actuated signal is to be installed and timed for the

location shown in Figure $22\mathrm{.}8.$ Because of light side$-$street

demand, a short minimum green of $6\mathrm{.}0$ seconds is desired.

Point detectors will be used. For the conditions shown:

$($a$)$ How far from the STOP line should the side$-$street

detectors be located?

$($b$)$ Recommend a passage time.

$($c$)$ Compute yellow and all$-$red times.

$($d$)$ Recommend a maximum side$-$street green and a

minimum main street green.

$($e$)$ What is the critical cycle length?

$($f$)$ Are pedestrian signals and$/$or pushbuttons required

for crossing the main street? The side street?