Coverage and file sizes

OS MasterMap Highways Network with Average Speed is supplied as a zipped file comprising a national set. The zipped file will contain one CSV file which will contain all records. The CSV file contains headers.

• File size will be approximately 180 MB zipped.

• The data is not encrypted.

OS MasterMap Highways Network with Speed Limits is supplied as a zipped file comprising a national set. The zipped file will contain one shapefile which will contain all records.

• File size will be approximately 370 MB zipped.

• The data is not encrypted.