Complex sentence: Timetables (or'schedules' North American English) are provided by the transport operator to allow potential users to plan their journeys, often supplemented with maps and fare schemes to help travelers coordinate their travel.
Split into simpler sentences: Timetables (or'schedules' in North American English) are provided by the transport operator to allow users to plan their journeys. They are often supplemented by maps and fare schemes to help travelers coordinate their travel.