Are motor scooters whose engines have less than 150 cubic centimeter displacement allowed to be driven on an expressway?

Motor scooters with engines less than 150 cubic centimeter displacement are not allowed to be driven on expressways in most countries. This is due to their small engine size and low power output, which make them unsafe for highway speeds. In some cases, scooters may be allowed on expressways if they have a higher engine displacement, such as 250 or 500 cubic centimeters, but this varies depending on the country's laws. It is important to check the local regulations for the area in which you plan to ride a motor scooter to determine whether or not it is permitted on expressways.