The phrase 'a road on which' is correct and usable in written English.
This phrase could be used to describe a road someone is travelling on, or to describe a road that has certain features or characteristics. For example: "We drove along a winding road on which were tall trees on both sides."
It was the road across "the Western States," a road on which no one ever traveled east, on which caravans of drifters and laborers and uprooted families moved in the one iconic direction, toward the Pacific Ocean.
So why walk backwards along a road on which the world needs to go forwards?
But it was with the fading light in mind that I went barreling toward Chinle along a road on which mine was often the only vehicle in sight.
Yorick would have ushered Hamlet down the road not taken, a road on which he might have found some measure of happiness.
"Driving at high speed along a road on which there had been ambushes, vaguely secure in the knowledge that they were nonetheless rare, one felt a heightened sense of being alive," Mr. Lake wrote.
Squeezed into a steep-sided valley near where three rivers meet, Betws stretches itself sinuously along a road on which every other shop seems to offer crampons, carabiners and walking boots, for this is climbing and hiking country.
Consider ( G(N,,A) ) a traffic network as a graph which consists of N nodes and A roads on which ( R subset N times N ) is a set of origin destination pairs.
If you can bear with me for a moment, the Tories published a poster with a picture of a road on it, which said: "Let's stay on the road to a stronger economy".
Or the words might conjure an empty glen with a vast blue sky, a stately stag on a distant purple mountain, an open road on which to walk.
Above a bumpy road on which each passing vehicle kicks up a cloud of dust, a red banner proclaims: "Plant trees.
But his race came under fire after a spectator was killed in 1906, and Vanderbilt wanted a safe road on which to hold the race and on which other car lovers could hurl their new machines free of the dust common on roads made for horses.
