Chapter 14.4, Problem 38E

To determine

(a)

What is the pedestrian’s average waiting time if $w=25$ ft and $R=0.2$ vehicle per second.

To determine

(b)

the increase in waiting time if $w$ is increased to $27$ ft using the linear approximation

To determine

(c)

waiting time if the width is increased to $27$ ft and $R$ decreases to 0.18.

To determine

(d)

What is the rate of increase in waiting time per 1-ft increase in width when $w=30$ ft and $R=0.3$ vehicle per second.