Hope this helps! I would not risk it by hoping they don't find out as they will.
Travelers with minor traffic offenses which did not result in an arrest and/or conviction for the offense may travel visa free, provided they are otherwise qualified. If you are not sure whether or not you are eligible to travel visa free, the only way to resolve this question would be to apply for a visa.
Travelers who have been arrested, even if the arrest did not result in a criminal conviction, and those with criminal records, (the Rehabilitation of Offenders Act does not apply to U.S. visa law), are required to apply for visas. If they attempt to travel without a visa, they may be refused entry into the United States.