<noinclude>{{:USA/CommonState/ReturnPurge|{{SubPage2}}}}<br/></noinclude>
<!-- See [[{{BasePage2}}/Major roads]] for guidance in {{RootPage2}} that may not be universal to all other states and territories. -->
=== US, State, and County Route Naming ===
The following naming conventions are used in Illinois for US, State, and County route naming.
'''US Highways''' [[File:Illinois-US66-Shield.png|40px|text-bottom]]<br />
US Highways (or routes) are named in Illinois using the standard US [[Road names#United_States_Numbered_Highways|Road Naming]] guidelines. The base format of the name for these road types is:
:'''US-66''' For U.S. Route 66
'''State Highways (Routes)''' [[File:Illinois-IL23-Shield.png|40px|text-bottom]]<br />
Illinois state highways are named as follows:
:'''SR-23''' For Illinois Route 23
:'''SR-23 S''' For Illinois Route 23, Southbound
:'''SR-23 BUS''' For Illinois Route 23 Business
:'''SR-23 BUS N''' For Illinois Route 23 Business, Northbound
:'''SR-23 ALT''' For Illinois Route 23 Alternate
:'''SR-23 ALT S''' For Illinois Route 23 Alternate, Southbound
:''Note: BUS '''must''' be completely in uppercase when used for proper TTS''
'''County Highways''' [[File:Illinois-PerryCH4-Shield.png|40px|text-bottom]]<br />
County highways in Illinois are named with a "CH" prefix as illustrated below.
:'''CH-4''' For County Highway 4
:'''CH-4 S''' For County Highway 4, Southbound
:Where Counties have highway designations beginning with a letter, the format looks like this:
:'''CH-T4''' For County Highway T4
:'''CH-T4 E''' For County Highway T4, Eastbound
US, State, and County Route Naming The following naming conventions are used in Wisconsin for US, State, and County route naming. US Highways US Highways (or routes) are named in Wisconsin using the standard US Road Naming guidelines. The base format of the name for these road types is: US-12 For U.S. Route 12 US-12 S For U.S. Route 12, Southbound US-12 BUS For U.S. Route 12 Business
State Highways (Routes) Wisconsin state highways are named as follows: WIS-29 For Wisconsin Route 23 WIS-29 S For Wisconsin Route 23, Southbound Note: BUS must be completely in uppercase when used for proper TTS
County Highways County highways[County Trunk Highway(CTH)] in Wisconsin are named with a "CH" prefix as illustrated below. CH-A For County Highway A