Topocad Road Line File
Adtolla SE which was formally known as Chaos Systems is a software developer which develops software used in Data Coordination, Drawing and Document Management, Project and IT Administration as well as GIS, Mapping and Surveying.
One of the programs that is used for Surveying and Mapping is Topocad, this is a package that is used for Computer Aided Design from the field survey stage up to the finished designs or maps.
Lines used to represent roads in Topocad use the .trl file extension.
How to open .trl files?
Software to open .trl files
What are .trl files