Driver's License Test Prep

Illinois · State Facts

Illinois Default Speed Limits

Default speed limits where no sign is posted: residential, urban, rural, school zones, and interstate maximums.

Residential default (mph)

30

Source: Illinois Rules of the Road 2025, Chapter 4: Speed Limits, p. 24

Urban default (mph)

30

Source: Illinois Rules of the Road 2025, Chapter 4: Speed Limits, p. 24

Rural default (mph)

55

Source: Illinois Rules of the Road 2025, Chapter 4: Speed Limits, p. 24

School zone (mph)

20

Source: Illinois Rules of the Road 2025, Chapter 4: Speed Limits, p. 24

Interstate maximum (mph)

70

Source: Illinois Rules of the Road 2025, Chapter 4: Speed Limits, p. 24

Right on red allowed unless posted?

yes

Source: Illinois Rules of the Road 2025, Chapter 10: Traffic Signals, p. 78

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