Please I need the Free flow speed, Demand Flow Rate, Mean speed, and Density. can you please break down this problem I cant figure out the items listed above. An urban freeway is to be designed using the following information.

AADT $=51,700$ veh$/$day

K $($proportion of AADT occurring during the peak hour$)$: $0\mathrm{.}11$

D $($proportion of peak hour traffic traveling in the peak direction$)$: $0\mathrm{.}65$

Trucks: $8\%$ of peak hour volume

PHF $=0\mathrm{.}96$

Lane width: $12$ ft

Shoulder width: $10$ ft

Total ramp density: $0\mathrm{.}5$ interchange$/$mile; all interchanges are to be cloverleaf interchanges

Terrain: rolling

Determine the number of lanes in the peak direction required to provide LOS C$.($Assume commuter traffic and assume no RVs$.)$

$3$

Correct: Your answer is correct.

lanes

Show all calculations required. $($Calculate your answers for the peak direction only. Enter fHV$,$ the peak hour volume in veh$/$h$,$ the free flow speed in mi$/$h$,$ the demand flow rate in pc$/$h$/$ln$,$ the mean speed in mi$/$h$,$ and the density in pc$/$mi$/$ln$.)$

fHV

$\mathrm{.}89$

Correct: Your answer is correct.

peak hour volume

$3696\mathrm{.}55$

Correct: Your answer is correct.

veh$/$h

free flow speed

$73\mathrm{.}6$

Incorrect: Your answer is incorrect.

Your response is within $10\%$ of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four$-$digit accuracy to minimize roundoff error. mi$/$h

demand flow rate

$3548\mathrm{.}688$

Changed: Your submitted answer was incorrect. Your current answer has not been submitted.

Your response differs from the correct answer by more than $10\%.$ Double check your calculations. pc$/$h$/$ln

mean speed

$71$

Correct: Your answer is correct.

mi$/$h

density

$26$

Incorrect: Your answer is incorrect.