Traveling between Missouri and Illinois is common for St. Louis residents. After all, we live right on the river. This travel is sometimes for work, but other times, it is to party or bar hop. If one is planning to drink, it is important to understand that DUI/DWI laws differ between these states.
Legal Blood Alcohol Concentration limits
Both states have a legal BAC limit of 0.08% for drivers over 21 years old. For commercial drivers, the limit is 0.04% in both states. Missouri enforces a zero-tolerance policy for drivers under 21 with a BAC limit of 0.02%, while Illinois has a strict zero-tolerance policy with no permissible BAC level. This distinction could have a major impact on young person’s life that chooses to drink in Illinois that may not have the same impact, if they stayed here.
Penalties for first-time offenders
In Missouri, a first-time DWI offense can result in up to six months in jail, a fine of up to $500 and a 90-day license suspension. Illinois imposes harsher penalties, including up to one year in jail, fines up to $2,500 and a minimum one-year license suspension. Again, the choice to imbibe across state lines could have consequences.
Missouri requires IIDs for second and subsequent offenses. Illinois mandates IIDs for all offenders, including first-time offenders, if they wish to obtain a Monitoring Device Driving Permit during their suspension period.
The look-back period, which determines how long a previous DUI/DWI remains relevant for sentencing, is five years in Missouri. In Illinois, the look-back period is 20 years. This means that prior offenses can impact sentencing for a much longer period in our neighboring state.
Refusal to submit to chemical testing
Refusing a breathalyzer or other chemical tests can lead to automatic penalties in both states. In Missouri, refusal results in a one-year license revocation. In Illinois, refusal leads to a one-year suspension for first-time offenders and three years for subsequent refusals.
Out-of-state convictions
Both Missouri and Illinois participate in the Interstate Driver’s License Compact, which means DUI/DWI convictions in one state can affect your driving record in the other. For example, a DUI conviction in Illinois will be reported to Missouri and can lead to penalties under Missouri law.
Understanding the differences in DUI/DWI laws between Missouri and Illinois is essential for St. Louis residents who frequently travel between the two states. The penalties, legal limits and enforcement policies can vary significantly. Being aware of these differences can help you stay compliant and avoid severe consequences.