Before revision: thumb Personal public transport (PPT) is a network of vehicles distributed throughout an area and available to the general public in such a way that each user has the ability to determine the route and schedule on a self-service basis .
After revision: thumb Personal public transport (PPT) is a network of private rental vehicles for users to drive, distributed at fixed locations(without booking) throughout an area and available to the general public in such a way that each user has the ability to determine the route and schedule on a self-service basis .