Source Transport for London Journey Planner MDV gmbh
Source Transport for London Journey Planner, MDV gmbh.
This example considers 'Bank' underground station in the 'City of London', which connects two tube lines ('Northern' and 'Central') the 'Waterloo and City' (Figure 019) with the Docklands Light Railway. There are several bus stops in the vicinity Figure 020. However not all the bus stop areas are considered to be part of an interchange with Bank Station. There is a walkable tunnel connection with 'Monument' underground station.
Figure 021 and Figure 022 show a possible stop hierarchy - a 'GTMU' stop area is used for the tube station and a 'GBPS' or 'GCLS' stop area for each group of bus stops. The GTMU stop area is used as a parent for the Bank GCLS Bus cluster as this is deemed to be close enough to Bank Underground Station to constitute an interchange. This example shows that judgement must be exercised as to which stops constitute a true interchange.
The model in this case has only four PLT elements for the Underground station - each represents a platform used for travel in both directions. This is legacy data - ideally each platform EDGE should now be coded as a separate PLT element (if they are coded at all).
The link to Monument creates an entrance to 'Bank' station, located at the Monument (and vice versa). The entrances should be at the same location to create direct connectivity (if supported); otherwise a walk link is needed, which is outside the scope of NaPTAN.