New answers tagged transportation
Since you mentioned Cambodia in the tag, you can find what you want from OpenStreetMap (OSM). The data can be downloaded from geofabrik.de, and you can follow this tutorial on how to search and download OSM from inside QGIS.
As per my comments, I would recommend having a look at the ArcGIS Runtime SDK for iOS, it supports fully offline routing and geocoding. Here is a sample from their GitHub page. They have samples in both Swift and Objective-C. You will have to build the public transportation network yourself, but maybe you can find shapefiles/feature classes on line for the ...
You could send an email to the GIS team at Hawaii's Department of Business, Economic Development and Tourism (DBEDT): firstname.lastname@example.org They'll be able to answer that for you.
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