Problems for calculating left turn length

CE $221-$ Advanced Highway design

Problem # $1$

Non$-$signalized intersections storage length

During the peak hour, the highest $15$ minute traffic volume is as follows:

Time

$7$:$30-7$:$45$

$7$:$45-8$:$00$

$8$:$15-8$:$30$

$8$:$30-8$:$45$

Volume $($vehicles$0$

$20$

$25$

$36$

$30$

The highest peak $15-$minute traffic volume for Northbound Left turn for passenger cars with $10\%$ truck traffic are as follows.

$\backslash$table$[[$Northbound left turn,North bound left turn,$],[$Time$,$Volume,Time,Volume,Time,Volume$],[8$:$01,2,8$:$08,2,8$:$15,3],[8$:$02,2,8$:$09,3,,],[8$:$03,2,8$:$10,3,,],[8$:$04,3,8$:$11,3,,],[8$:$05,4,8$:$12,1,,],[8$:$06,2,8$:$13,2,,],[8$:$07,2,8$:$14,2,,]]$

Using two$-$minute rule determine storage length for North$-$bound left turn direction. Assume passenger vehicle length of $25$ feet for your calculations.