All states have laws that prohibit drivers from making an illegal or improper turn. Common examples of illegal or improper turns are:

• U-turns (when there is a No U-Turn sign)

• Making a right or left turn without first moving to the far right or left lane

• Making a right or left turn when there is a sign at the intersection that prohibits such turns (No Right Turn).

The penalty for making an illegal or improper turn usually includes a fine and points on your driver’s license.

As with many traffic violations, the officer issuing the citation and the prosecutor have significant discretion in determining whether there was a violation of a traffic law and whether the violation constitutes a certain offense, as defined by the state legislature in the traffic code or in a municipal ordinance.

This discretion to issue a ticket or citation and prosecute the charge against the driver is balanced by the discretion of the jury or judge in determining whether the prosecution met its burden of proof sufficient to convict the driver (for a criminal offense) or find the driver responsible (for a civil infraction, violation, or offense).

In Illinois, traffic laws prohibit drivers from making illegal or improper turns, which include U-turns where prohibited by signage, turning without moving to the appropriate lane, and turning where signs indicate such turns are not allowed. Violations of these laws typically result in fines and may also lead to points being added to the driver's license. Enforcement of these laws is at the discretion of law enforcement officers, who may issue citations based on their judgment of the situation. Prosecutors then decide whether to pursue charges based on the evidence and the specifics of the traffic code or municipal ordinances. Ultimately, if the case goes to court, it is up to a judge or jury to determine if the prosecution has met its burden of proof to convict the driver of a criminal offense or find them responsible for a civil infraction, violation, or offense. The specific penalties and processes can vary depending on the jurisdiction within the state and the nature of the offense.