Q$4$: A: For $3-$phase signal intersection, calculate cycle time $C_0$ and draw the timing diagram for number of vehicles given below, knowing that: $t\frac{s}{?}$ phase $=2$ seconds, all red $=1$ seconds, Amber $=3$ seconds?

$(15$ marks$)$

$\backslash$table$[[$Flow$,$ pcu$/$hr$,$Phase $1,$Phase $2,,],[\backslash$table$[[$Straight$],[$& right$]],$left,$\backslash$table$[[$Straight$],[$& right$]],$left,$\backslash$table$[[$Straight$],[$& right$]],$left$],[100,200,90,700,80,],[$Lane width, m$,6,6,6\mathrm{.}5,6\mathrm{.}5,6,6]]$

B: Sketch with the necessary markings the relations between volume, speed and density.

$(10$ marks$)$

$(15$ marks$)$

Q$5$:A: Choose the Correct Answer:

When the speed of traffic flow becomes zero, then:

A$.$ traffic density attains maximum value whereas traffic volume becomes zero

B$.$ traffic density and traffic volume both attain maximum value.

C$.$ traffic density and traffic volume both become zero,

D$.$ traffic density becomes zero whereas traffic volume attains maximum value

Reaction time of a driver $.....$

A$.$ decreases with increase in speed

B$.$ increases with increase in speed

C$.$ is same for all speeds

D$.$ none of the above

The journey speed is $q,$ running speed.

A$.$ equal to

B$.$ greater than

C$.$ smaller than

D$.$ none of the above

The $q,$ is the number of vehicles per distance, measured by $($veh$.\frac{?}{km})$

A$.$ Density

B$.$ Speed

C$.$ Volume

D$.$ Headway

Acceleration rates for passenger cars normally within a range.....

A$.1-3k\frac{m}{h}\frac{?}{s}$

B$.3-8k\frac{m}{h}\frac{?}{s}$

C$.8-12k\frac{m}{h}\frac{?}{s}$

D$.$ none of the above

B: What are the Requirements of traffic signs? List them briefly

$(10$ marks$)$

GOOD LUCK

$2-2$