Problem $1($HCS Lab Exercise $1)$

Determine operational LOS for a Signalized Intersection with the following characteristics:

$200$ ft of LT bay for E$-$W approach.

The lane widths are $10$ ft for E$-$W and $12$ ft for N$-$S lanes.

Crosswalks are given with two$-$way flow rate of $120\frac{p}{h}$ for E$-$W and $40\frac{p}{h}$ for N$-$S$.$

On$-$street parking on E$-$W streets with the rate of $5ve\frac{h}{h}.$

CBD $($Central Business District$)$ Area Type.

Pre$-$timed, $3-$phase signal cycle

Isolated intersection with random arrivals: use Arrival Type $=3($based on the platoon ratio $=1\mathrm{.}0$

$PHF=1\mathrm{.}0$

Base Saturation Flow Rate $=1800p\frac{c}{h}\frac{?}{ln}$

Heavy Vehicle Percentage $=5\%(E\frac{B}{W}B)2\%(S\frac{B}{N}B)$

No Bus Activity

No Bicycle Activity

Parking maneuvers per hour $=5(EB),7(WB)$

Pedestrians per hour $=120(E\frac{B}{W}B),40(N\frac{B}{S}B)$

Start$-$up Lost Time $=2$ seconds

Extension of effective green time $=2$ seconds

Upstream Filtering $=1\mathrm{.}0($isolated intersection$)$

Speed Limit $=40mph(E\frac{B}{W}B),35mph(N\frac{B}{S}B)$

RTOR Volume veh$/$h $=0(E\frac{B}{W}B),22(NB),33(SB)$

Detector Length $=30ft$

Initial Queue $=0$

Ignore Heaviest Lane Volume

Everything else $=$ Use default values unless otherwise stated.

The intersection configuration diagram with turning movement counts and the signal timing plan for the intersection are shown in the figures below.

$\backslash$table$[[,$Phase $1,$Phase $2,$Phase $3],[$Movement$,$Pes,,$],[$Max Green $($Sec$),30,25,5],[$Min Green $($Sec$),5,5,5],[$Yellow $($Sec$),4,4,4],[$All Red $($Sec$),0,0,0],[$Passage Time $($Sec$),2,2,2],[$Walk Interval $($Sec$),14,-,16],[$Pedestrian Clearance Time $($Sec$),5,,5]]$

Analysis Procedure:

Enter the inputs and estimate the current LOS

Find optimal signal timing plan

Evaluate the resulting LOS, compare to the initial LOS and note the improvement$($s$)$How to solve This problem