Hi,
Done that route quite often - usually returning after an off-road ride
outward with the Decathlon folks...
Dommasandra to Sarjapura - some amount of trucks and other traffic,
good road surface.
Sarjapura - some crowded bits and some horrendous stretches of road -
probably 1km or so of punishment to get through town.
NH207 - Lovely highway - most stretches of this road are broad and
excellent - it is so roundabout that not many trucks use it, so it is
excellent to bike on. And some parts of it are quite picturesque as
well.
Enjoy!
Sunil