On the application itself you DO have to put whether or not you received any speeding tickets. It won't ask how many but will normally ask for a short description like speeding or no seatbelt.
After your interview you will receive a phone call for a job offer if you're accepted. Here in CA, you must fill out a background check and at that point you must write ALLLL THE TICKETS you had. After your info will be submited and compared to your personal background records (including work history). I had a pretty high number of moving violations and when filling out you have to write the EXACT date it was issued, date resolved, county, and description. Any flaws can be counted against you, you can get this info from the DMV or from someone you know that works in law inforcment.
Like I said before, I had more then a couple tickets but was still hired. Just DON'T HIDE ANYTHING!!!! Hope this helped =)