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OSM Logo This user submits data to OpenStreetMap under the name
Babel user information
en-N This user has a native understanding of English.
da-N Denne bruger har dansk som modersmål.
fr-3 Cet utilisateur dispose de connaissances avancées en français.
Users by language
JOSM LeifRasmussen submits data to OpenStreetMap using JOSM.
iD LeifRasmussen submits data to OpenStreetMap using iD.
Android icon LeifRasmussen uses an Android phone or tablet.
Mapillary LeifRasmussen takes photos for Mapillary as constellation.
OsmAnd icon LeifRasmussen uses OsmAnd, mobile map viewing & navigation app.

Chromium Material Icon-256x256.png This user prefers Chromium.
Flag of the United States.svg LeifRasmussen has mapped in the United States
Flag of Denmark.svg LeifRasmussen has mapped in Denmark.
No flag.svg LeifRasmussen has mapped in Martinique.
Go Do Some Mapping LeifRasmussen
prefers to go outside and map.
Bike LeifRasmussen
is a bicyclist.

My name is Leif Rasmussen, and my intentions are to improve OpenStreetMap. If I did anything wrong, please let me know!

Local Knowledge

My main method of editing OpenStreetMap is through local knowledge, so I accordingly try to only map in areas I have been. I will often bike or run trails with no coverage in OpenStreetMap with a Garmin GPS watch and then use the traces for mapping the trails.



Some data, such as address data, is a huge task to add manually. I therefore have completed several address imports in my area (250,000 total addresses) to help navigation apps and geocoders, without having to do the thousands of hours of manual work that would be needed otherwise.


In Raleigh North Carolina, past import projects imported almost all buildings, but 30,000 scattered throughout the county were missing in late 2018. Manually finding and adding these sheds and new houses is a slow process, so me and other mappers in the area imported the missing buildings from Open Data Raleigh.

Bus stops