I agree adding seeds speeds things up over just waiting on Mother nature
But vetch is used by a LOT of hi way dept's due to how well it holds soil together, and grows like a weed fast LOL
the one farm I ran, a old farmer planted a 6 acre field of it, and he loved the darn stuff
every time it went to seed head and blew away
had that crap growing in all my food plots there up to 1/2 a mile away or more from the plot of it

chemicals handled it, but deer, bears, turkey, and small critters all loved it as well, cover and food in one

but if you DON"T control it , it will spread all over the place
on a logging type road, I don't think thats a big worry, the woods along it will slow its growth down a lot, but it will hold the soil in place once it takes root
, just drive on it enough to keep it lower LOL

Rye grass is way cheaper however!
some clover will grow in the shade, but I have never had it grow as well as rye grass, and even when clover again does grow, other things tend to out grow it and take over
clover seed isn't cheap either!
better for wildlife, yes, but not your wallet, and it won't last any ways!