Traffic Control Devices

Question 1

Percentage of driver guidance information may be received visually

Answer 1

Up to 90%

Question 2

Minimum length of the mast arm for high-mast lighting, as used to light large highway areas such as interchanges and rest areas.

Answer 2

125 ft

Question 3

According to MUTCD, no-passing zones shall be established at following locations:

Answer 3

At vertical and horizontal curves

Question 4

Four sections of the PEDSAFE system:

Answer 4

Background information
List of countermeasures
Case studies
Selection tool

Question 5

Message on a changeable message sign should be designed to be legible from a minimum distance for night time condition.

Answer 5

600 ft

Question 6

Temporary pavement markings should not remain in place for more than

Answer 6

2 weeks

Question 7

What is the philosophy of “Get in, Get Out and Stay out”?

Answer 7

Minimize disruption of normal traffic conditions

Question 8

What is the minimum lateral offset from the edge of the traveled way for post-mounted signs?

Answer 8

12 ft

Question 9

How many warrants does the MUTCD specify for the installation of traffic signals?

Answer 9

9

Question 10

Minimum and maximum yellow change intervals

Answer 10

3 and 6 seconds

Question 11

Centerline markings are required at all urban arterials and collectors that

Answer 11

Have traveled way of 20 or more in width
ADT of 6,000 vehicles per day or greater

Question 12

Which traffic control device is typically used to prevent vehicular queueing across tracks at a crossing?

Answer 12

Queue cutter signal

Question 13

What type of material provides retro reflectivity to pavement markings?

Answer 13

Glass beads

Question 14

How many speed limits should be displayed on any one speed limit sign or assembly?

Answer 14

No more than 3 speed limits

Question 15

How many destination names or street names should be displayed on any advance guide sign or exit direction sign?

Answer 15

No more than two

Question 16

Minimum distance between an advance route turn assembly and either a destination sign or junction assembly in rural areas?

Answer 16

200 ft

Question 17

What does the term “legend” include on traffic signs?

Answer 17

All word messages, symbols and arrow designs

Question 18

In what situation may a hairpin curve sign be used instead of a curve or turn sign?

Answer 18

If curve has a change in horizontal alignment of 135 degrees or more

Question 19

Which of the following meets the vertical clearance criterion for a warning beacon suspended over the roadway?

Answer 19

17 ft