Legal Question in Real Estate Law in Pennsylvania

It means that the owners and tenants of property or properties immediately adjacent to the northwest of the driveway running northwest between your property and "said" properties. No one should be able to park on the driveway and block access. A 7 foot wide driveway sounds very narrow and must have been there a long time, when perhaps wagons or other small vehicles needed to go through.

In order to know exactly what properties and what driveway are meant, you would have to refer to a survey.