NCDOT Traffic Engineering & Control 2

Question 1

NCDOT uses level of service (LOS) grades A through F to evaluate intersection operations. Which LOS indicates the worst traffic conditions with excessive delays?

Accepted Answer

LOS F

Answer

LOS A

Answer

LOS C

Answer

LOS E

Question 2

What does the term 'peak hour volume' represent in NCDOT traffic engineering studies?

Accepted Answer

The highest hourly traffic volume recorded during the study period

Answer

The highest 15-minute traffic count of the day multiplied by four

Answer

The average of the two busiest hours of the day

Answer

The total daily volume divided by 24

Question 3

Which NCDOT document governs the design and placement of temporary traffic control (TTC) devices in construction work zones?

Accepted Answer

NCDOT Work Zone Traffic Control Manual

Answer

NCDOT Roadway Standard Drawings

Answer

NCDOT Standard Specifications for Roads and Structures

Answer

NCDOT Pavement Design Manual

Question 4

When designing a roundabout in North Carolina, which design element primarily controls vehicle speeds through the intersection?

Accepted Answer

Inscribed circle diameter and entry deflection geometry

Answer

Sign placement and posted speed limit

Answer

Number of lanes in the circulatory roadway

Answer

Traffic signal phasing within the circle

Question 5

What is the standard NCDOT yellow change interval (yellow clearance time) purpose at a signalized intersection?

Accepted Answer

To warn drivers that the green phase is ending and they should prepare to stop

Answer

To allow pedestrians to complete their crossing

Answer

To provide all-red clearance for vehicles already in the intersection

Answer

To extend green time for heavy turning movements

Question 6

According to NCDOT driveway permit requirements, what is the primary concern when evaluating a proposed commercial driveway location?

Accepted Answer

Sight distance and potential conflict with traffic operations

Answer

Driveway width and surface material

Answer

Number of parking spaces in the development

Answer

Landscaping requirements along the highway frontage

Question 7

Which federal regulation requires NCDOT to prepare a Transportation Improvement Program (TIP) that programs projects receiving federal funding?

Accepted Answer

Moving Ahead for Progress in the 21st Century (MAP-21) and FAST Act

Answer

Clean Air Act

Answer

National Environmental Policy Act (NEPA)

Answer

Americans with Disabilities Act (ADA)