If you have a driveway on your property, you have the exclusive right to use it. This means that your neighbours are not allowed to use your driveway without your permission. There may be times when it is convenient for your neighbour to park in your driveway or drive across it to access their own property, but they should always get your permission first. If you do not want your neighbour to use your driveway, you can put up a fence or other barrier to block them from using it.