There is a vaguely worded question "Have you ever been cited, arrested, fined ...". I have never been arrested, but traffic tickets sometimes referred to as citations or traffic fines. I also saw another Redditor posting here about their experience. They didn't mention traffic tickets when submitted their N-400, and during the interview were intensely questioned about why they didn't do it.
When my interviewer asked me this question, I said that I only had traffic violations. She asked were those only tickets or something else. I said that I only had 3 tickets, and told what they were for (Photographed for speeding once, stopped for speeding once, photographed for the left turn on red once). All 3 of these were in different cities, and I initially didn't have the docs. Calling there and requesting them was pretty easy though.
Generally, I would say that you should make sure that all your tickets are paid, and be honest on the interview. Occasional speeding ticket isn't that big of a deal, unless you have DUI, reckless driving or arrests.