Some routing information goes in the
RouteParams-field of a polyline. It is of the form
- speed and class are 3 bit values (0 to 7), the others are 1 bit (0 or 1)
- oneway is set if the road is a oneway street, toll if it's a toll road
- car, bus, taxi, foot, bike, truck are set if the corresponding vehicle is not allowed to use the road
- emergency and delivery are unclear
There is a freeware MS Windows program called Ptxt2shp which will convert .mp files into Shapefiles (it runs fine on Linux using Wine). Once you have a Shapefile you can use OGR tools from the GDAL project to convert to a multitude of other vector formats.