VolksNav(c) in Cameroon: starting with urban radius r100

The definition of the radius r100 allows to build location codes based on imaginary clocks,

which are smarter than post codes and other alternatives. They look like this example:

  StatusQuo(c) Yaounde m4:7 r22  

This target could be a building, a crossing, a stop point, a bridge etc. The conventions for this format with hours, minutes and radius are as follows:

prefix of a location code

Bases on an relevant point called m0 or r0, the urban pole.

Example Yaounde: place de L'Reunificacion

basic horizon hour

This is the direction from urban pole to north.

m3 will be to east, m6 to south etc. These direction lines divide the city like a cake into 12 m-sectors.

number after the " : "
horizon minutes

This is simply the distance to the horizon hour

1 unity = 100 meters.


This is the distance to the pole.

1 unity = 100m.

The small red circles show "CityName r100" = 10km radius.

For more datails, see:

Urban systems:


Douala Garoua Maroua
Bamenda Bafoussam Kousseri Ngaoundere
Kumba Loum Nkongsamba Limbe
Edea Foumban Bafia Bertoua
Ebolowa Buea Kribi Sangmelima
Kombo Nanga-Eboko Abong-Mbang Mokolo
Wum Ngaoundai Mbouda Yoko
Bankim Ndiki Lagdo Dschang


Yaoundé map on myMaps, please enter the following URL:



SEARCH ENGINE for Yaoundé, actually 5 tourist attractions incl. Mfou National Park


App VolksNav makes StreetSmart - 500 cities incl. Yaoundé

app VolksNav in Cameroon - 20 cities - Android: search for "volksnav" on play store


The division of the horizon into 12 directions can also be used indoor or global