Our last house was sideways on to a road that was busy in the rush hour and much less busy outside the rush hour. It was a large very solidly built victorian semi and we didn't really notice the noise because the house had 13 inch thick brick walls and just absorbed the noise. The garden wrapped round three sides of the house, but we moved there as DC both went off to secondary school and developed a whole lot of outside interests and friends who they could walk or bus to visit. It was about the time I went back to work full time and then started commuting to London, so we were all so busy with work, school and outside interests, we did not use the garden much. But with a thick conifer hedge down the side, it was not too noisy at weekends. That was 40 years ago
25 years ago, we moved to our current home and now live 100 yards from the main Bristol to London railway line, with a thick band of forest sized trees between us and the railway.
The first week the three heavy aggregate trains coming up every night from Somerset woke us up, the second week we just incorprated the noise into our dreams. The third week onwards we just slept through them.
Since moving here the line has been completely relaid, ballast, sleepers and continuous rail , which reduced the noise considerably and now the line has been electrified, no more diesel engines, just electric trains, and we can now barely hear them, even in the garden.
Being prepared to live with first the road and until recently the trains, we have been able to buy much bigger and nicer houses than we could have if we had wanted complete tranquility