What is the implied consent law?

The implied consent law indicates that by operating a motor vehicle on public roads, drivers automatically agree to submit to testing for blood alcohol content (BAC) if law enforcement suspects them of driving under the influence (DUI). This means that a driver cannot legally refuse a breathalyzer test when requested by a police officer. If a driver does refuse, there can be severe penalties, including automatic license suspension.

The other options do not accurately describe the implied consent law. While carrying insurance is necessary for operating a vehicle, it is not covered under implied consent. The law does not allow drivers to refuse a breathalyzer test, as that would contradict the very principle of implied consent. Lastly, the focus of the law is specifically on testing for alcohol or drugs rather than passenger safety regulations. Thus, option B correctly captures the essential function of the implied consent law.