On expressways, using a warning device that bears the TS mark is a legal requirement.

高速道路で使う停止表示器材は、TSマークの付いたものの使用が義務づけられている。

This statement is FALSE

Explanation

Using a TS-marked device is a recommendation ("try to use one"), not an obligation. What the law requires is placing a warning device when you stop because of a breakdown.

Original text

停止表示器材は、努めてTSマークの付いたものを使いましよう。

Source: Rules of the Road — 交通の方法に関する教則第7章高速道路での走行第1節高速道路に入る前の心得 · National Public Safety Commission Notification No.3

Guides that explain this

Entering a Japanese Expressway: Acceleration Lane and Minimum Speed

On expressways, using a warning device that bears the TS mark is a legal requirement.

Explanation

Original text

Guides that explain this

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