User:Hawkeygoal/IL Pages/IL SpeedLimits(2016 05)

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Overview

The goal of this page update is to incorporate guidance relevant to maintaining speed limits into the Illinois wiki page.

This information is under consideration for the Illinois state wiki.
It should not be considered official guidance.

Content

Speed Limits

Illinois follows the general speed limit guidelines for the USA.

In addition to posted speed limits, Illinois has several default speed limits that are applicable in different circumstances. These are defined in Illinois Compiled Statutes 625 ILCS 5/Ch. 11 Art. VI (Speed Restrictions) with supporting information in 625 ILCS 5/Ch. 1 (Definitions). The maximum speed limits to be used are for private passenger vehicles.

The default speed limits that should be added to the Waze map in Illinois are:

  • Interstates and tollways — 70 mph.
  • Highways with four lanes, having a separation between roadways moving in opposite directions — 65 mph.
  • Other highways, roads and streets (non-urban areas) — 55 mph.
  • Other highways, roads and streets (urban districts) — 30 mph.

The counties of Cook, DuPage, Kane, Lake, Madison, McHenry, St. Clair, and Will, may set maximum speed limits lower than the state defaults.

An urban district is "The territory contiguous to and including any street which is built up with structures devoted to business, industry or dwelling houses situated at intervals of less than 100 feet for a distance of a quarter of a mile or more." [625 ILCS 5/1-214]

Illinois default speed limits not currently applicable and not to be added to the Waze map:

  • Alleys — 15 mph.
  • School Zones — 20 mph (on school days between 7 a.m. and 4 p.m. when children

are present and signs are posted).

Discussion

This proposal is still being drafted prior to open discussion.