In general, mopeds are not allowed on highways because they usually do not meet the minimum speed requirements for highway travel. However, there are some exceptions to this rule. For example, in some states, mopeds may be allowed on highways if they have a top speed of at least 30 miles per hour (50 km/h). In other states, mopeds may be allowed on some highways but not others.
Always check the local laws and regulations to make sure you know where and how you can legally operate your moped.