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CE73.39 Traffic Flow Theory Quiz#1

Total questions: 10

Worksheet time: 4mins

Name
Class
Date
1.

The actual number of vehicles that are passing through a point on

a traffic facility during an hour.

What is this?

a)

Demand

b)

Volume

c)

Flow

d)

v/c Ratio

2.

Given that a 6-lane highway has 3 lanes per direction.

If the flow per lane is 1800 veh/h/ln in the eastbound direction.

What is the flow for that direction?

a)

5400 veh/h

b)

3600 veh/h

c)

2400 veh/h

d)

1800 veh/h

3.

Assume that headways between consecutive vehicles in a lane are uniform. If the time headway is 6 seconds, what is flow rate?

a)

1800 veh/h/ln

b)

1200 veh/h/ln

c)

900 veh/h/ln

d)

600 veh/h/ln

4.

Given that the jam density of a highway segment is 60 veh/km/ln and

Free-Flow Speed (FFS) is 100 km/h.

If the average speed of vehicles on the segment (u) is 55 km/h.

What is the flow condition?

a)

Congested Flow

b)

Uncongested Flow

c)

Free Flow

d)

Completely Congested

5.

Assume that headways between consecutive vehicles in a lane are uniform.

If the space headway is 20 meters, what is the density?

a)

200 veh/km/ln

b)

180 veh/km/ln

c)

100 veh/km/ln

d)

50 veh/km/ln

6.

Given that the jam density of a highway segment is 60 veh/km/ln and

FFS is 100 km/h.

If the average speed of vehicles on the segment (u) is 50 km/h.

What is the current flow rate?

a)

1200 veh/h/ln

b)

1500 veh/h/ln

c)

2000 veh/h/ln

d)

5000 veh/h/ln

7.

Number of vehicles arrived during a 15-minute time interval,

and converted to vehicles per hour.

What is this?

a)

Flow

b)

Volume

c)

Demand

d)

v/c Ratio

8.

Given that the jam density of a highway segment is 80 veh/km/ln and

FFS is 120 km/h.

What is the capacity?

a)

1800 veh/h/ln

b)

2200 veh/h/ln

c)

2400 veh/h/ln

d)

4800 veh/h/ln

9.

If you want to get datapoints in the congested region of the speed-flow curve, which location that speed & flow should be measured?

a)

A

b)

B

c)

Either will do.

d)

Neither of them.

10.

For a low flow condition, the distribution of the arrival rate is ...

a)

Binomial

b)

Normal

c)

Poisson

d)

Exponential