@Setanta,
Quote:You have never established your authority to say what is grammatically correct.
You must have missed this:
As reported by the NOAD,
into has the following meanings:
expressing movement or action with the result that someone or something becomes enclosed or surrounded by something else. (Cover the bowl and put it into the fridge.)
Doesn't sound like it pertains to a road.
expressing movement or action with the result that someone or something makes physical contact with something else. (He crashed into a parked car.)
Doesn't sound like it pertains to a road.
indicating a route by which someone or something may arrive at a particular destination. (The narrow road that led down into the village.)
Doesn't sound like it pertains to a road.
indicating the direction toward which someone or something is turned when confronting something else. (with the wind blowing into your face)
Doesn't sound like it pertains to a road.
indicating an object of attention or interest. (a clearer insight into what is involved)
Doesn't sound like it pertains to a road.
expressing a change of state. (a peaceful protest which turned into a violent confrontation)
Doesn't sound like it pertains to a road.
expressing the result of an action. (They forced the club into a humiliating and expensive special general meeting.)
Doesn't sound like it pertains to a road.
expressing division. (three into twelve equals four)
Doesn't sound like it pertains to a road.
informal (of a person) taking a lively and active interest in something. (He's into surfing.)
Doesn't sound like it pertains to a road.
onto means:
moving to a location on the surface of something. (They went up onto the ridge.)
Sounds like it could pertain to a road.
moving aboard (a public conveyance) with the intention of traveling in it. (We got onto the train.)