Greenhorn question

HI folks, am new to OSM and did not get my head around the overpass turbo queries to run on OSM.
Coming from Germany and lookin for unpaved/gravel dirt roads that are legally ok to ride with car or motorbike. We are quite prohibitive, hence not many I guess :frowning:

I found modified the following query, but dont get it to do what I want.
a) it does not show in BBLOCK the entire road/way if I use unclassified. If I use Service then it shows this one, but not another one.
Is that due the fact that the 2 roads aforementioned are differently tagged in OSM and
b) how do I add in the query the right syntax to check for permissive motor_vehicle ?

Thanks Stefano7676

/*
This has been generated by the overpass-turbo wizard.
The original search was:
“highway=track and surface~“unpaved|grass””
*/
[out:json][timeout:25];
// gather results
(
// query part for: “highway=unclassified and surface~/unpaved|grass/”
way[“highway”=“unclassified”]“surface”~“unpaved|gravel|fine_gravel|sand|compacted|ground|dirt|earth|grass”;
);
// print results
out body;

;
out skel qt;