Map Making Process » Map History » Road Network
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How The Roads are made
Our surveyors constantly drive around Singapore to update current and new road information. Through these daily surveying, the road outlines are then compiled and captured. These data is then sent to our Map Making Centre to be
processed and converted into usable data.
Step 1 : Tracing Satellite Images
Using satellite images, our cartographers trace Singapore's road network.
Step 2 : Basic Road Outline
When completed, this results in a basic road outline
Step 3 : Surveying
Our surveyors then obtain raw GPS data by driving around Singapore.
In order to get consistent data, they drive around the entire island at least 5 times.
Step 4 : Tracing Log Data
The GPS data logs are then compared with the basic road outlines.
Where necessary, adjustments are made to the road outline in terms of location, shape, length, etc.
Step 5 : Final Road Outline
The GPS data logs are then compared with the basic road outlines.
Where necessary, adjustments are made to the road outline in terms of location, shape, length, etc.
The map above is then sent to surveyors who will walk through the entire area to collect the road names, lat/long and other road attributes.
Getting Road Attributes
Road attributes (road signs, road directions and road names) are collected manually by ground surveyors.