ProMods

Recently got promods and wanted to drive using small roads, when i got the trailer i checked the map and its making me go from one dock to another, anyone know how to fix without having to change to best or shortest as i want to travel through the cities and towns

I think there are options that allow you to set the GPS to fastest, shortest route and so forth

yeah, i have it set to shortest route as i want to drive through towns and cities so i have it set to shortest routes but when i get a job it makes me go through dock after dock and cant do anything about it unless i change my route type

So, if this doesn't work for you, change the GPS option to "the scenic route", that always chooses small roads. I hope the advice helps you

Added in 11 minutes 42 seconds:
Or you can also manually define the route, marking the points you want to pass through and those you don't want to pass through.

where do i find this setting?

You configure it in Options > Gameplay > Navigation Mode. In the latter, you choose the Secondary Roads option (Depending on the language it can also say Scenic Routes)