Part 2 of NeTEx includes reusable components for constructing timetables of journeys from reusable components, NeTEx separates the concerns of where the timing of a PT route takes place (The TIMING PATTERN made up of TIMING POINTs and TIMING LINKs) from the actual timing values (which are held separately as RUN TIMEs and WAIT TIMEs). Different sets of timing values belong to different TIME DEMAND TYPEs (Peak, off peak, late night etc) can be used with the same TIMING PATTERN to generate accurate timetables for journeys at different times of day.