OS (GB) Meridian 2 (Motorways and A Roads)
Find a route over the Motorways and A Roads in an OS (GB) Meridian 2 Dataset
Select Analysis > Routing > Point-to-point.
Select OS (GB) Meridian 2 (Motorways and A Roads)
The following CASE expression is used for OS (GB) Meridian 2:
(_length# / CASE WHEN DESC$='Motorway' THEN 60 WHEN DESC$='A Road' THEN 50 ELSE 0 END) * (60 / 1609.344)