posted 3 years ago
Audacity is still my go-to, and if you want to give it a try, it is fast to try out.
Open up your recording, and select a portion of the audio that has just road noise - then Effect -> Noise Reduction -> Get Noise Profile.
Next, select all of the audio (Ctrl+A will do it quickly if you want) and go to Effect -> Noise Reduction -> OK (in the bottom right of the Noise Reduction window).
Give the audio a listen and see if it works for your needs! You can play around with different parameters in that window if it's still noisy, but the defaults there have always worked for me.
It's never too late to start gardening, and even the smallest project is worthwhile.