問33
頻出度★☆☆
自動運転の水準は, 一般的に“レベル1”から“レベル5”に分けられている。“条件付運転自動化”と呼ばれる“レベル3”が示す自動運転の水準に関する記述として, 最も適切なものはどれか。
令和7年度 ITパスポート試験 問33
This question's explanation and your answers so far.
解説
問 33
- ア
正解 The correct answer is ア. Autonomous driving Level 3, “conditional driving automation,” is a stage in which, under certain conditions, the system becomes the primary driver and the human normally does not need to drive. However, unlike Levels 4 and 5, it is not fully driverless: when it becomes difficult for the system to continue autonomous driving, the human must take over driving in response to a request from the system. Choice ア, “the system is the primary driver and the human does not need to drive, but when it is difficult for the system to continue autonomous driving, the human must drive,” accurately captures the Level 3 features of being “conditional” while still leaving the human responsible for taking over, so it is appropriate.
Incorrectイ
The statement that “the human does not need to drive and driving devices are unnecessary” and “the areas where autonomous driving is possible are limited” describes Level 4, “high driving automation,” in which, within limited areas, even vehicles without driving devices can run unmanned (not needing driving devices is not a feature of Level 5 alone). Because Level 3 assumes that the human takes over, driving devices are needed, so this statement does not apply to Level 3.
Incorrectウ
The statement that “the human is the primary driver” and that the system assists with both steering and acceleration/deceleration, as in following the vehicle ahead while keeping within the lane on an expressway, is a description of Level 2, “partial driving automation.” Simultaneously assisting with multiple operations such as steering and acceleration/deceleration while the human still remains the primary driver is the feature of Level 2, which differs from Level 3, where the system becomes the primary driver.
Incorrectエ
The statement that “the human is the primary driver” and that the system assists with part of the driving (a single operation) depending on conditions ahead or behind, as in automatic braking or a sudden-start prevention system, is a description of Level 1, “driver assistance.” This is a stage that assists with either steering or acceleration/deceleration as a single driving operation, which is a different level from Level 3, where the primary driver shifts to the system.
ここがポイント
- The definition of each stage of autonomous driving levels (Levels 1 to 5). In particular, the key point of Level 3, “conditional driving automation,” is that under certain conditions the system becomes the primary driver, but when it is difficult to continue autonomous driving, the human needs to take over driving.
- Autonomous driving is broadly divided into two by whether the primary driver is the human or the system (Levels 1 and 2 = driver assistance with the human as the primary driver; Level 3 and above = the system as the primary driver). Distinguish these differences: Level 1 assists with a single operation, Level 2 provides combined assistance with steering plus acceleration/deceleration, Level 4 is driverless operation within a limited area, and Level 5 is full autonomous driving with no limits on area or conditions.
用語