Which colour combination identifies a direction sign placed on a primary route?
A blue background with white route numbers and red lettering
A green background with yellow route numbers and white lettering✓Bonne réponse
A white background with green route numbers and yellow lettering
A brown background with black route numbers and white lettering
Explication
A primary-route direction sign has a green field, yellow route numbers and white destination lettering. A white field with black details belongs to the non-primary network instead.