What is the difference between a regular and heavy use subscription?

A Regular subscription is meant for non-commercial usage only with a maximum of 1.000 km per month. A heavy user subscription doesn't have these limitations.

A Regular subscription is meant for non-commercial usage only. Furthermore, members who have a regular subscription are only allowed to ride up to 1.000 km per month.

A Heavy subscription on the other hand is allowed to be used for non-commercial and commercial usage. Members have no maximum mileage to their subscription.