NCDOT Traffic Engineering & Control 3

Question 1

In North Carolina, what minimum length of deceleration taper is typically required for a right-turn lane on a rural state highway with a 55 mph speed limit?

Accepted Answer

290 feet

Answer

100 feet

Answer

200 feet

Answer

400 feet

Question 2

What does a double yellow center line on a North Carolina two-lane highway indicate?

Accepted Answer

No passing is permitted for traffic in either direction

Answer

Passing is permitted for both directions of travel

Answer

Passing is permitted only for the direction of travel on the left

Answer

No passing zone for trucks only

Question 3

NCDOT's functional classification system divides roads into three principal categories. Which category includes interstates and expressways serving the highest level of mobility?

Accepted Answer

Arterial roads

Answer

Local roads

Answer

Collector roads

Answer

Neighborhood streets

Question 4

Which NCDOT standard governs the placement and height of overhead guide signs on interstate highways?

Accepted Answer

MUTCD with NCDOT supplemental guidance

Answer

NCDOT Roadway Design Manual

Answer

NCDOT Traffic Engineering Manual

Answer

AASHTO Green Book only

Question 5

What is the primary purpose of an all-red clearance interval in a traffic signal cycle?

Accepted Answer

To clear vehicles that were legally in the intersection during the yellow phase before conflicting movements begin

Answer

To allow pedestrians additional time to complete crossings

Answer

To reduce cycle length at high-volume intersections

Answer

To provide extra green time for emergency vehicles

Question 6

When NCDOT performs a traffic impact analysis (TIA) review for a new development, what threshold of generated trips typically triggers the requirement for a full TIA in North Carolina?

Accepted Answer

100 new trips in the peak hour

Answer

50 new trips in the peak hour

Answer

250 new trips in the peak hour

Answer

500 new trips in the peak hour

Question 7

According to NCDOT standards, which pavement marking is used to separate opposing lanes of traffic on an undivided highway where passing is permitted under safe conditions?

Accepted Answer

Single broken yellow line

Answer

Double solid yellow line

Answer

Single solid white line

Answer

Double broken white line