Gaimen50-question practice tests in the real exam formatLicense Conversion Test: 10 Most-Missed Questions (Real Data)
Updated: 2026-10-21
We counted 3,411 answers (33 users) recorded in menkyopass's license conversion practice between October 1 and 20, 2026. Overall, 77% were correct. The most-missed question was “Is a steep uphill slope a place where you must slow down (jokō)?” — only 34% correct. The top 10 fall into four patterns: (1) mixing up uphill and downhill, (2) statements that say “in every case”, (3) exceptions to exceptions, and (4) similar numbers (5 m vs 10 m).
How we counted (where these numbers come from)
Every time a user picks True or False in menkyopass's license conversion practice (mock tests, topic drills and the sample questions in articles), the answer is recorded. We counted answers from October 1 to 20, 2026: 33 users, 3,411 answers. About 77% came from the Chinese-language pages.
If the same person answered the same question more than once, each answer counts. Because the number of users is small, each question's rate is a rough guide based on about 20–35 answers. The topic rates (78–785 answers each) are more stable. We will update the numbers as data grows.
The questions are written from Japan's Road Traffic Act and the National Police Agency's Rules of the Road (交通の方法に関する教則). They are not official exam questions.
The 10 questions with the lowest correct rate
Questions with 25 or more answers, lowest correct rate first. All answers are shown.
| Question | Answer | Correct (answers) |
|---|---|---|
| 1. A steep uphill slope is a place where you must slow down (jokō). | False (jokō: near the top of an uphill and on steep downhills) | 34% (29) |
| 2. At an intersection and within 30 m before it, you must not overtake even on a priority road. | False (driving on a priority road is an exception) | 39% (31) |
| 3. A steep uphill slope is a place where overtaking is prohibited. | False (prohibited near the top of an uphill and on steep downhills) | 39% (31) |
| 4. Even at an intersection and within 30 m before it, you may overtake a light vehicle (bicycle, etc.). | True (overtaking light vehicles is not prohibited) | 42% (31) |
| 5. A child under 6 must use a child seat in every case, without exception. | False (buses, taxis, breastfeeding, etc. are exempt) | 43% (28) |
| 6. On a road with a side strip 0.75 m wide or less, you must move into the side strip to stop or park. | False (at 0.75 m or less, stop at the left edge of the roadway) | 44% (32) |
| 7. When driving, you must wear a seat belt in every situation, without exception. | False (illness, pregnancy, reversing, etc. are exempt) | 46% (28) |
| 8. You must not stop or park at a railroad crossing or within 5 m before and after it. | False (railroad crossings: 10 m) | 49% (35) |
| 9. On a wet road with worn tires, both reaction distance and braking distance become at least twice as long. | False (road surface affects braking distance only) | 50% (28) |
| 10. At night, you must always turn on hazard lights when stopped, even where you are visible from 50 m behind. | False (lights may be omitted if street lighting makes you visible from 50 m) | 53% (32) |
Correct rate by topic
Of the nine topics, only parking & stopping, speed limits and overtaking were below 70%. All three require you to remember combinations of places and distances. The pass mark is 45 of 50 (90%), so the current average is not enough in any topic.
| Topic | Correct | Answers |
|---|---|---|
| Parking & stopping | 68% | 284 |
| Speed limits | 69% | 254 |
| Overtaking | 69% | 292 |
| Road signs | 79% | 785 |
| Driver duties | 79% | 389 |
| Right of way | 80% | 636 |
| Traffic signals | 81% | 508 |
| Expressways | 83% | 185 |
| Accidents & emergencies | 85% | 78 |
Four patterns behind most mistakes
Nine of the top 10 are False. Only one part of the sentence differs from the real rule, so choosing True from the overall impression costs you the point.
- Uphill vs downhill (#1, #3): jokō and no-overtaking both apply near the top of an uphill and on steep downhills. A steep uphill is in neither list.
- “In every case” statements (#5, #7, #10): seat belts, child seats and night-time lights all have legal exceptions. When you see “always” or “in every case”, suspect False.
- Exceptions to exceptions (#2, #4): overtaking within 30 m before an intersection is prohibited, except when you are on a priority road. Even in no-overtaking places, you may pass a light vehicle such as a bicycle.
- Similar numbers (#6, #8, #9): railroad crossings 10 m, intersections and crosswalks 5 m; 0.75 m is the line for side strips; reaction distance (空走距離) and braking distance (制動距離) have different causes.
The three slope rules in one table
#1 and #3 are the same confusion. For slopes, the places for jokō, no overtaking and no stopping/parking are different (Road Traffic Act Articles 30, 42 and 44).
| Place | Jokō | No overtaking | No stopping/parking |
|---|---|---|---|
| Near the top of an uphill | Yes | Yes | Yes |
| Steep downhill | Yes | Yes | Yes |
| Steep uphill | No | No | Yes |
How to use these results
The knowledge test is 50 questions in 30 minutes, and you need 45 or more to pass — you can miss only 5. Lock in the three weakest topics first (parking & stopping, speed limits, overtaking). When a sentence fits one of the four patterns above, say out loud which part differs from the real rule.
menkyopass offers mock tests in the same format as the real test in English, Chinese, Vietnamese and more. The first mock test and 3 topics are free; all questions are a one-time ¥2,980.
Practice questions using this term
- A steep uphill slope is a place where you must slow down (to a speed at which the vehicle can stop immediately).
- At an intersection and within 30 meters before it, you must not overtake, even when you are driving on a priority road.
- A steep uphill slope is a place where overtaking is prohibited.
- Even at an intersection and within 30 meters before it, you may overtake a light vehicle (bicycle, etc.).
- When carrying a child under 6 years old in a car, you must use a child seat in every case, without exception.
- On a road with a narrow side strip 0.75 meters wide or less, you must move into the side strip when you stop or park.
- When driving a motor vehicle, you must wear a seat belt in every situation, without exception.
- You must not stop or park at a railroad crossing or within 5 meters before and after its edges.
- On a road wet with rain and with worn tires, both the free running (reaction) distance and the braking distance become at least twice as long.
- At night, whenever you stop or park on a road, you must turn on your hazard lights, even in a place that street lighting makes visible from 50 meters behind.
FAQ
Q. Is this correct rate related to the official pass rate?
A. Not directly. These numbers come from menkyopass users' answers. The official pass rate was published by the National Police Agency: 42.8% for the knowledge test in October–December 2025.
Q. Will these exact questions appear on the real test?
A. They are not official questions; they are practice questions based on the Road Traffic Act and the Rules of the Road. Questions about exceptions and numbers are common on the real test, so learning these patterns helps.
Q. Do people taking the test in other languages miss the same questions?
A. About 77% of the answers came from the Chinese version. Per-question counts by language are still small, so we do not show rates by language yet. We will add them as data grows.
Q. When are the numbers updated?
A. We extend the period and update as answers accumulate. Check the update date at the top of the page.