Privacy hedging

Hi, we live next to a 60km/h road and are considering making a decking/bbq area by the fence which is next to this road. One idea we had was to plant some hedging trees (or something) that could grow to be thick enough and tall enough to protect a little from noice and weather, as well as give the desired privacy. The deck will have to stand up a little above ground so the hedging will need to be over 2m high at least. The area to line with this would be a 4m line turning at right angels to a 9 m line (like an L shape). Hope this makes sense?

So basically, we’re looking for some advice as to what hedging works well for this situation?

Thanks,
Chris