$8\mathrm{.}3$ Estimating the Critical Gap at ${96}^{th}$ and Zionsville Road. The top portion of the summary of gap events $($using the format of table $8\mathrm{.}1)$ is shown below. Eighty$-$eight right$-$turning vehicles accepted gaps. Only the $54$ vehicles with the shortest gaps are included in the table shown below.

A$.$ Fill in the empty cells in Columns $4$ and $5.$ Show your calculations for the row in which $t=5sec.$

B$.$ Estimate the critical gap to the nearest $0\mathrm{.}01$ sec $.$ Show your calculations.

C$.$ Repeat the analysis, this time using three approach lanes on SB Russel Street. Do the results change, as far as whether a signal is warranted?

$\backslash$table$[[\backslash$table$[[$Length of gap$],[($t sec$.)]],\backslash$table$[[(2)],[$Number of$],[$accepted gaps$],[$less than t sec$.)]],\backslash$table$[[$Number of$],[$rejected gaps$],[($greater than t sec$.)]],\backslash$table$[[(4)],[$accepted gaps A$($t$)],[($less than t sec$.)]],\backslash$table$[[(5)],[$Percent$],[$Rejected gaps R$($t$)],[($greater than t sec$.)]]],[0,0,145,,],[1,1,125,,],[2,2,63,,],[3,6,34,,],[4,8,20,,],[5,14,7,,],[6,18,5,,],[7,28,2,,],[8,33,2,,],[9,42,2,,],[10,47,1,,],[11,54,0,,]]$