Speed Prefererences

Hi

When I plan a route it sometimes takes me via street roads rather than a dual carridgeway. I'm sure this is to do with the speed properties that you set for certain roads.

When looking in the properties section, it lists numerous roads and just want to double check what everyone else has them set as:-

I understand that Motorway = motorway but what are the other items? Which road relates to a Dual carridgeway? Is this classed as a Major Road?

Whats a International,secondary,connecting,important local road,local road and a destination road?

Please help
Thanks
Rich.

[Charlie]

I have:

Motorway = 75
Int Road = 59
Major Road = 50
Secondary Road = 47
Connecting Road = 40
Important local road = 34
Local Road = 31
Destination Road = 25

I have to be honest and say I don't know which is what