PennDOT Driver's Knowledge 3 — Questions and Answers
Question 1: When approaching a railroad crossing with no gates or signals, Pennsylvania law requires you to:
- Stop completely before crossing
- Slow to 15 mph and proceed if clear
- Slow down, look, and listen before crossing (Correct answer)
- Honk your horn and cross quickly
Correct answer: Slow down, look, and listen before crossing
At unguarded crossings, you must slow down, look both ways, and listen before crossing the tracks.
Question 2: What should you do if you miss your exit on a Pennsylvania highway?
- Stop and back up on the shoulder
- Make a U-turn at the nearest median opening
- Continue to the next exit and turn around (Correct answer)
- Cross the solid white line and exit anyway
Correct answer: Continue to the next exit and turn around
You must continue to the next exit and use proper roads to return — backing up or crossing solid lines on a highway is illegal and dangerous.
Question 3: In Pennsylvania, what is the blood alcohol concentration (BAC) limit for drivers 21 and older?
- 0.04%
- 0.06%
- 0.08% (Correct answer)
- 0.10%
Correct answer: 0.08%
The legal BAC limit for drivers 21 and older in Pennsylvania is 0.08%.
Question 4: Which of the following is true about right-of-way at an uncontrolled intersection in Pennsylvania?
- The faster vehicle has the right-of-way
- The vehicle on the left must yield to the vehicle on the right (Correct answer)
- The vehicle on the right must yield to the vehicle on the left
- The larger vehicle always has the right-of-way
Correct answer: The vehicle on the left must yield to the vehicle on the right
At an uncontrolled intersection, the driver on the left must yield to the driver on the right.
Question 5: When changing lanes on a Pennsylvania highway, you must:
- Signal only if traffic is present
- Check mirrors, signal, check blind spot, then move (Correct answer)
- Move first, then signal to alert other drivers
- Signal for 1 second before changing lanes
Correct answer: Check mirrors, signal, check blind spot, then move
Safe lane changes require checking mirrors, signaling your intent, checking your blind spot, then smoothly moving over.
Question 6: A 'No Turn on Red' sign means:
- You may turn right after stopping if the way is clear
- You must not turn in any direction when the light is red
- You may not turn right at any time on red (Correct answer)
- The rule applies only during peak hours
Correct answer: You may not turn right at any time on red
A 'No Turn on Red' sign prohibits turning right (or left where posted) while the traffic signal is red.
Question 7: What does a double solid yellow center line mean?
- Passing is allowed from both directions
- Passing is prohibited from both directions (Correct answer)
- Passing is allowed only from the left lane
- Passing is allowed when the road is clear
Correct answer: Passing is prohibited from both directions
A double solid yellow line means neither direction of traffic may cross it to pass.
PennDOT Driver's Knowledge 3
When approaching a railroad crossing with no gates or signals, Pennsylvania law requires you to: