MOT Advanced Warning Sign Placement 2 — Questions and Answers
Question 1: On a roadway with a posted speed limit of 55 mph, what is the minimum advance warning distance recommended by the MUTCD for the first warning sign?
- 350 feet
- 500 feet
- 1000 feet (Correct answer)
- 1500 feet
Correct answer: 1000 feet
The MUTCD recommends a 1000-foot advance warning distance for speed limits of 45–55 mph on two-lane roads.
Question 2: Which factor does NOT directly influence the required advance warning sign distance?
- Posted speed limit
- Road surface color (Correct answer)
- Sight distance restrictions
- Volume of traffic
Correct answer: Road surface color
Road surface color has no bearing on advance warning distance calculations under MUTCD guidelines.
Question 3: When a work zone is located just beyond a horizontal curve, where should the first advance warning sign be placed?
- At the beginning of the curve
- Before the curve so drivers see it on the tangent (Correct answer)
- Inside the curve at the midpoint
- After the curve, adjacent to the work zone
Correct answer: Before the curve so drivers see it on the tangent
Signs placed before the curve ensure drivers receive warning while still on a straight tangent with full visibility.
Question 4: A 'Road Work Ahead' sign is considered what type of device in an advance warning area?
- Channelizing device
- Regulatory sign
- Temporary traffic control sign (Correct answer)
- Informational guide sign
Correct answer: Temporary traffic control sign
Temporary traffic control (TTC) signs, including 'Road Work Ahead,' are the primary warning devices in the advance warning area.
Question 5: For a short-duration work zone on a high-speed arterial, which sign sequence is correct approaching the work zone?
- Be Prepared to Stop → Road Work Ahead → Worker Symbol
- Worker Symbol → Road Work Ahead → Be Prepared to Stop
- Road Work Ahead → Worker Symbol → Be Prepared to Stop (Correct answer)
- Be Prepared to Stop → Worker Symbol → Road Work Ahead
Correct answer: Road Work Ahead → Worker Symbol → Be Prepared to Stop
The standard advance warning sequence begins with 'Road Work Ahead,' followed by more specific information signs, then action signs like 'Be Prepared to Stop.'
Question 6: What is the primary reason for using larger sign sizes in work zones on high-speed highways compared to local roads?
- To comply with local ordinances
- To improve legibility at greater viewing distances for higher-speed drivers (Correct answer)
- To increase reflectivity during daylight hours
- To reduce the number of signs needed
Correct answer: To improve legibility at greater viewing distances for higher-speed drivers
Larger signs ensure that drivers traveling at higher speeds have sufficient time to read and respond to the warning before reaching the work zone.
Question 7: When must advance warning signs be removed or covered in a work zone?
- At the end of each work shift when workers are not present (Correct answer)
- Only when the project is fully complete
- Every weekend regardless of work status
- Only when directed by the engineer of record
Correct answer: At the end of each work shift when workers are not present
MUTCD requires that TTC signs not applicable to current conditions be removed or covered to prevent driver confusion.
MOT Advanced Warning Sign Placement 2
On a roadway with a posted speed limit of 55 mph, what is the minimum advance warning distance recommended by the MUTCD for the first warning sign?