PennDOT Signs, Signals, and Markings 3 — Questions and Answers
Question 1: What does a double solid yellow centerline mean on a two-lane road?
- Passing is permitted from both directions
- Passing is prohibited from both directions (Correct answer)
- Passing is permitted only from the left lane
- Lane ends ahead
Correct answer: Passing is prohibited from both directions
Double solid yellow lines mean no passing is allowed from either direction of travel.
Question 2: A sign showing an 'X' with the letters 'RR' means:
- Road repair zone
- Railroad crossing ahead (Correct answer)
- Restricted road entry
- Rest area route
Correct answer: Railroad crossing ahead
An 'RR' crossbuck or X sign marks a railroad crossing, warning drivers to watch for trains.
Question 3: What shape and color is a school zone warning sign in Pennsylvania?
- Red octagon
- Yellow pentagon (five-sided) (Correct answer)
- Orange diamond
- Green rectangle
Correct answer: Yellow pentagon (five-sided)
School zone warning signs are yellow pentagons (five-sided) indicating a school is nearby and children may be present.
Question 4: A solid white line along the right edge of the roadway is called the:
- Centerline
- Edge line (fog line) (Correct answer)
- Shoulder boundary marker
- Bike lane separator
Correct answer: Edge line (fog line)
The solid white line at the right edge of the roadway is the edge line, also called a fog line, marking the boundary of the travel lane.
Question 5: What does a flashing red traffic light require drivers to do?
- Slow down and proceed with caution
- Stop completely, then proceed when safe (Correct answer)
- Yield to cross traffic only
- Treat it as a green light during off-hours
Correct answer: Stop completely, then proceed when safe
A flashing red light must be treated like a stop sign — come to a complete stop, then proceed when it is safe.
Question 6: What does an orange sign in a construction zone indicate?
- Permanent road change
- Temporary traffic control for work zones (Correct answer)
- Detour to alternate route only
- End of speed limit restriction
Correct answer: Temporary traffic control for work zones
Orange signs are used exclusively for temporary traffic controls in construction and work zones.
Question 7: A 'WRONG WAY' sign is typically what color and shape?
- Yellow diamond
- White rectangle
- Red rectangle with white letters (Correct answer)
- Orange diamond
Correct answer: Red rectangle with white letters
Wrong Way signs are red rectangles with white letters, used to warn drivers who have entered a one-way road going against traffic.
PennDOT Signs, Signals, and Markings 3
What does a double solid yellow centerline mean on a two-lane road?