Honolulu, Hawaii 1:1
Honolulu, Hawaii 1:1 created using height maps and Open Street Import mod. All street types were imported except for service roads. The biggest thing you’re missing from the service roads are the airport roads but otherwise they were mostly used for parking lots or private roads. Current node count was already at around 27,000 so I wanted to leave some room for building as well. (Node limit was reached if every service road was placed.) Most major hiking and biking routes are also included. Node limit will likely be reached while building so choose which areas you want to focus on wisely.
Most road connections will have to be edited but location and layout should be pretty accurate. Most of them are fixable using Move It mod and just adjusting heights of nodes. Road types will also need to be changed to accurately represent lane counts. I stuck with vanilla roads for compatibility.
The location of the map was chosen for maximum traffic simulation which includes air and sea as well. I’d recommend using a mod that can control the amount of traffic that comes in from outside connections. Have workers coming in mostly from the west side and tourists from air.