To block the noise you need to have good windows and shut them tight. No blind or curtain will perform the miracle you would like it to! Using AC might be your best bet for a quiet home and you don't have to use it all the time, just when you want some peace and quiet.

I'm sorry, but with windows open, you're going to hear the noise unless you make your own "white noise" to cover some of it up. You might try window fans with them blowing in from the quieter side of your home and going out on the noisier side. The fans would help circulate air and add the white noise.

Fans really help to keep noise to a lower level and provide air circulation. Get a good quality fan that won't introduce a new unwanted noise.

Curtains might not help with noise but they are very warm and attractive. I do not like blinds....but they are very popular. We do not use AC either. Drapery panels can be open or closed easily and allow light and air into a home.