The answer will depend on how old you are. Generally speaking, if you are under the age of 21, two convictions within 24 months will suspend your license. If you have had a license suspension under the age of 21 already, one conviction will suspend your license. If you are over the age of 21, three convictions within a 12 month period will suspend your license. If you are elderly, a single ticket may be enough to have the Secretary of State seek to cancel your license.
Technically, by receiving a second ticket while on court supervision for the first, you are eligible for what is called a petition to revoke court supervision. The idea here is that Court Supervision was an agreement you made to stay out of trouble. You failed to live up to your end of the agreement, and so they can seek to revoke your Court Supervision and enter a conviction on your record on the speeding ticket, and ask to have you convicted on the new accident ticket.
Answered on Sep 27th, 2013 at 10:18 AM