Complex sentence: Stops at busy locations may have shelters, seating and possibly electronic passenger information systems; less busy stops may use a simple pole and flag to mark the location and'customary stops' have no specific infrastructure being known by their description.
Split into simpler sentences: Stops at busy locations may have shelters, seating and possibly electronic passenger information systems. Less busy stops may use a simple pole and flag to mark the location and'customary stops' have no specific infrastructure being known by their description.