Under what condition will a driver's license be suspended after a DUI arrest?

A driver's license can be suspended after a DUI arrest under several conditions, reflecting the seriousness of driving under the influence. When a driver takes a chemical test and registers a legal level of intoxication, which in Illinois means a blood alcohol concentration (BAC) of 0.08% or higher, this directly indicates that the driver is over the legal limit.

Additionally, refusal to take a chemical test results in an automatic suspension of the driver's license under Illinois law. This is part of the implied consent laws that stipulate individuals automatically agree to testing if suspected of DUI.

Furthermore, testing positive for any trace of a controlled substance can also lead to license suspension, as driving under the influence of drugs is treated seriously regardless of whether it is alcohol or other substances affecting a driver's ability.

Recognizing these points reads together, all the conditions lead to a suspension of driving privileges, making the most comprehensive answer the correct choice. Each situation reflects different aspects of impairment and accountability in driving laws, which underscores the need for drivers to be aware of their rights and responsibilities concerning DUI laws.