On highways, the movement of vehicles whose speed according to the technical specification or condition is less than 40 km/h:

Բացատրություն

The English prompt diverges from the source editions: they include vehicles whose maximum capability is exactly forty kilometres per hour, and the accepted source response prohibits their motorway use. The threshold requires an ability to travel faster than that value, so using the rightmost lane or lacking a separate minimum-speed sign creates no exception.