Speed Limits
Posted limits, basic speed law, and speed adjustments for conditions.
Speed Limits rules in Illinois follow the federal framework with state-specific limits, distances, and exceptions. The practice questions below are drawn from the Illinois driver handbook, so they track the state's own rules.
Speed Limits questions, Illinois edition.
Each question links through to a full explanation, the rule it tests, and a citation back to the manual.
- What is the default speed limit on Illinois interstates and tollways when no other limit is posted? →
- Unless otherwise posted, what is the default speed limit in an Illinois alley? →
- The default speed limit in Illinois city and town areas is: →
- Unless otherwise posted, what is the default speed limit on an Illinois highway with four lanes? →
- On school days, during what time period does the 20 mph school zone speed limit apply? →
- The manual says a driver may drive at the maximum posted speed limit: →
- Unless otherwise posted, what is the default speed limit on other highways and in rural areas in Illinois? →
- When must drivers obey the posted speed limit in an Illinois construction zone? →
- According to the manual, doubling your vehicle's speed has what effect on its stopping distance? →
- The manual says that when a minimum speed limit is not posted, a driver: →
Drilling Speed Limits? The book plans every chapter for you.
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