${s.name}: ${pick(title, 'en')}
What each sign shape and color tells you before you even read the words.
この問題はオリジナルであり、公式マニュアル「${s.manual.title}」(${s.manual.edition})、${s.agency} に基づいています。
Did you know?
- In 1915, the first stop sign was used in Detroit.
- In 1917, Michigan painted the first center line on a state highway, the Marquette-to-Negaunee Road.
- In 1920, the first four-way traffic signal with red, yellow and green lights was used at Woodward Avenue and Fort Street in Detroit.