CEEN $4359$ Extra Assignment

Due date: May $9,2024$ at Noon

A new segment of freeway is being built to connect two existing parallel freeway facilities. The following traffic and roadway characteristics are expected:

Traffic Characteristics

AADT$=97500$ veh$/$day

$K=12\%$

$D=56\%$

$PHF=0\mathrm{.}92$

$4\%$ single$-$unit trucks

$4\%$ tractor$-$trailer trucks

Roadway Characteristics

Grade in peak direction: $1\mathrm{.}5$ miles, $2\mathrm{.}5$ percent

Total ramp density $=1\mathrm{.}75$ per mile

Lane widths $=11ft$

Shoulder widths $=6ft$

a$)$ Determine the number lanes necessary to ensure that this new freeway segment will operate at no worse than LOS D during the peak hour in the peak direction.

b$)$ How much additional traffic, in the peak direction, can be accommodated before the freeway reaches capacity?