destination_workflow.md

Detailed Workflow of adding missing Destination tags in the USA

Assign a state

1. Assign a state to yourself in spreadsheet

Assign a highway and use Checkautopista2 to map features

1. Open the destination reference document for your assigned state area. Pick a highway to check and assign it on the spreadsheet to avoid conflict.

2. Open checkautopista2 and zoom to the assigned state. In the search tab (top left corner) click on search in map button to load all the visible highways in the bounding box.

3. Select the assigned highway from the dropdown and click on the download button.

4. Look out for red outer circle for missing destination. Use open in JOSM button to open the node in JOSM. Orange outer circle represents exit_to tag and we don't need to add destination tags in the way. Green outer circle represent that the concern way already has destination tag.

5. Download the data around the motorway_junction and mapillary layer to locate a signboard.

6. Use combination Mapillary images, DoT documents, and Wikipedia to add destination as destination=* on motorway_link ways and the destination highway as destination:ref=*. Below is a an example On the highway=motorway_link(represented by red line) add destination=Daly City and destination:ref=I 280 South. This can be confirmed with DoT document and wikipedia while searching for exit number 431

7. Add any highway missing in the highway spreadsheet. Mark the highway done if all destination tags are mapped/review

Analyzing signboards in mapillary

Look out of Highway sign boards on imagery. They may look something like this-

Places to look for-

• near a motorway_junction
• near start of a motorway_link

Do's and don't

• Use ; to separate multiple destination and refs.
• Use the custom TMS layer to understand nearby exit numbers+motorways (tms[22]:https://api.mapbox.com/v4/pratikyadav.3b94b1a9/{zoom}/{x}/{y}.png?access_token=pk.eyJ1IjoicHJhdGlreWFkYXYiLCJhIjoiMTA2YWUxNjRkNmFmZGQ4YzAxZWFiNDk0NDM1YjE1YjAifQ.4P6N5dNmA_WQXd3BsJvu5w)
• Read more on Highway intesection to understand them better.