What are exit numbers?
- An exit number is a number assigned to a road junction, as an exit from a freeway. It is usually marked on the same sign as the destinations of the exit.
Different tags for exit numbers:
ref=*is used when the exit has a specific number assigned to it.
How to add exit numbers?
Use the Tasking manager link in the mapping ticket.
When we lock a motorway in Tasking manager, a link appears to take us directly to the road in Checkautopista2
Verify the exits on the route for missing information
Loading from Checkautopista2 to JOSM
These are the colour representations for the exits detected in Checkautopista2
- Browse along the route and check the ways on both directions at every Exit location for the following:
- There is a
motorway_junctionin the starting node of the
motorway_linkexiting the highway red dot
motorway_junctionhas a correct exit number
refvalue as per the source. Nodes with missing
reftags represented by a blue dot
- The exit number on both directions are the same.
- There is only one exit in a direction for every exit number.
Add missing exit numbers
Download the data and mapillary layer to locate a signboard around the blue marker in the imagery.
Use a combination of Mapillary, to add the
highway=motorway_junction(stick to using Mapillary as primary source and move to others in case of unavailablity of information)
Analyzing signboards in mapillary
Look out of highway sign boards in the satellite imagery. They may look something like this-
Places to look for-
Do's and don'ts
It is not necessary that exit numbers are sequential. It might be 45 after 41.
If there are multiple exits on the same signboard then you can tag them as
ref=* ; *instead of
ref:right=*until you are confirmed with that.
highway=motorway_junctionwhere the traffic flow is towards the motorway
What are destination tags?
Different tags for destinations:
destination- placename that the way exiting from the freeway leads to.
destination:ref- reference of the roads directly ahead.
destination:street- streetname the way exiting from the freeway leads to.
How to add destination tags?
- Look out for red outer circle in Checkautopista for missing destination. Use
Open in JOSMbutton to open the node in JOSM. Orange outer circle represents
exit_totag and we don't need to add destination tags in the way. Green outer circle represent that the concern way already has destination tag.
Download the data around the
motorway_junctionand mapillary layer to locate a signboard.
Use combination Mapillary images and Exit explorer to add destination as
motorway_linkways and the destination highway as
Do's and don'ts
;to separate multiple destination and refs.
- Read more on Highway intesection to understand them better.