Gaimen50-question practice tests in the real exam formatYellow lane boundary line
黄色の車両通行帯境界線（きいろのしゃりょうつうこうたいきょうかいせん）
Meaning
The boundary of vehicle traffic lanes divided by a yellow line. You must not change course (change lanes) across this line.
Common mistake on the test
You may change course across a white boundary line, but lane changes are prohibited across a yellow boundary line, which is a common trick point.