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| <small>This information is under consideration for the Illinois state wiki.<br>It should not be considered official guidance.</small> | | <small>This information is under consideration for the Illinois state wiki.<br>It should not be considered official guidance.</small> | ||
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=== U-Turns === | === Turning Restrictions === | ||
In Illinois, U-Turns can be performed unless specifically prohibited by law. Illinois | The provisions for turning in Illinois are defined in Rules of the Road, in Illinois Compiled Statutes [http://ilga.gov/legislation/ilcs/ilcs4.asp?DocName=062500050HCh%2E+11&ActID=1815&ChapterID=49&SeqStart=109900000&SeqEnd=134500000 625 ILCS 5/11]. In this wiki section we cover two specific situations: Left turns across medians and U-Turns. | ||
==== Left Turns across Medians ==== | |||
Left turns across paved non-curbed medians are allowed in Illinois, defined in [http://ilga.gov/legislation/ilcs/ilcs4.asp?DocName=062500050HCh%2E+11+Art%2E+VII&ActID=1815&ChapterID=49&SeqStart=119600000&SeqEnd=121100000 625 ILCS 5/11-708 (e)]. | |||
The Illinois Department of Transportation (IDOT) defines several types of medians in Bureau of Design and Environment Manual Ch. 34, [http://www.idot.illinois.gov/assets/uploads/files/doing-business/manuals-split/design-and-environment/bde-manual/chapter%2034%20cross%20section%20elements.pdf Cross Section Elements]: | |||
* Flush - A median which is adjacent to traffic lanes and on the same plane as the lanes. These are painted on the pavement surface. | |||
* Depressed - The median between opposing traffic lines is slightly below the elevation of the traffic lanes. It is also designed for drainage and storage of plowed snow. | |||
* Raised-Curb - The curb on these medians is greater than two inches in height. | |||
* Traversable - This type of median has a curb two inches in height. | |||
A Two-Way Left Turn Lane (TWLTL) is typically a flush median. IDOT allows a traversable median may be used as a TWLTL in place of a flush median. | |||
==== U-Turns ==== | |||
In Illinois, U-Turns can be performed unless specifically prohibited by law. Illinois statute defining the limitations on U-Turns is [http://www.ilga.gov/legislation/ilcs/ilcs4.asp?DocName=062500050HCh%2E+11+Art%2E+VIII&ActID=1815&ChapterID=49&SeqStart=121100000&SeqEnd=121800000 625 ILCS 5/11-802] and can be reviewed in the Illinois Secretary of State [http://www.cyberdriveillinois.com/publications/pdf_publications/dsd_a112.pdf Rules of Road] booklet. | |||
When considering enabling a U-Turn on the Waze map in Illinois, do so only if there is a strong potential to provide improved routing and the movement is not prohibited by law. Some possible situations where this could be the case are: | When considering enabling a U-Turn on the Waze map in Illinois, do so only if there is a strong potential to provide improved routing and the movement is not prohibited by law. Some possible situations where this could be the case are: | ||
Revision as of 01:11, 20 December 2015
| This information is under consideration for the Illinois state wiki. It should not be considered official guidance. |
Turning Restrictions
The provisions for turning in Illinois are defined in Rules of the Road, in Illinois Compiled Statutes 625 ILCS 5/11. In this wiki section we cover two specific situations: Left turns across medians and U-Turns.
Left Turns across Medians
Left turns across paved non-curbed medians are allowed in Illinois, defined in 625 ILCS 5/11-708 (e).
The Illinois Department of Transportation (IDOT) defines several types of medians in Bureau of Design and Environment Manual Ch. 34, Cross Section Elements:
- Flush - A median which is adjacent to traffic lanes and on the same plane as the lanes. These are painted on the pavement surface.
- Depressed - The median between opposing traffic lines is slightly below the elevation of the traffic lanes. It is also designed for drainage and storage of plowed snow.
- Raised-Curb - The curb on these medians is greater than two inches in height.
- Traversable - This type of median has a curb two inches in height.
A Two-Way Left Turn Lane (TWLTL) is typically a flush median. IDOT allows a traversable median may be used as a TWLTL in place of a flush median.
U-Turns
In Illinois, U-Turns can be performed unless specifically prohibited by law. Illinois statute defining the limitations on U-Turns is 625 ILCS 5/11-802 and can be reviewed in the Illinois Secretary of State Rules of Road booklet.
When considering enabling a U-Turn on the Waze map in Illinois, do so only if there is a strong potential to provide improved routing and the movement is not prohibited by law. Some possible situations where this could be the case are:
- Residences or business driveways or parking lots are connected to a divided primary street (PS/mH/MH), where doing so would eliminate complex routing to reach the other side of the road.
- At the ends of a single segment at a corner gas station (or similar corner parking lot road usage) to allow add-a-stop or new destination selections to provide an optimal exit route.
Do not enable U-Turns at every intersection on streets or primary streets (PS/mH/MH) even if allowed by law as this may also lead to routes that are challenging to execute.
Before enabling a U-Turn, be sure it is allowable by law. In summary, the conditions that must be met are:
- No traffic control devices posted prohibiting the movement.
- The movement may not be performed on a curve.
- The movement may not be perfomed on a hill or incline.
- A driver must be able to see in all directions on all roadways a at least 500 feet (152.4 meters).