Ohio/Map features

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This page gives Ohio-specific tagging recommendations and examples. It supplements the much more comprehensive tagging reference at Map Features.

Roadways

highway

Tag Description Examples
highway=motorway Interstate highways, including loops and spurs; significant portions of US and state routes built to Interstate standards (high-speed, fully access-controlled).
  • I-71
  • I-275
  • Ohio Turnpike (I-76/80/90)
  • Ronald Reagan Cross County Highway (SR 126)

State Route 7 in Knox Township.jpg

Lockland Ohio Canal.jpg

highway=trunk Selected U.S. and state routes not built to Interstate standards. High-speed, limited-access, usually divided highways with at least two lanes in each direction. May have occasional traffic lights and unlit street-level crossings, but mostly controlled-access with on- and off-ramps. Two-lane undivided (but still limited-access) sections of Trunk might make sense if they are extensions of divided Trunk highway or Motorway.
  • Appalachian Highway (SR 32)
  • Columbia Parkway (US 50)
  • Various Cincinnati viaducts

CincyClmbiaPly.jpg

Western Hills Viaduct.JPG

highway=primary Other U.S. routes; major state routes, such as those that connect larger county seats not directly connected by US routes, or are important connectors between primary or higher roads. An example of which routes might be promoted to primary can be found here. Sections of primary roads generally should not "dead-end" at lower-class roads. Be sure to add the road to a route relation if applicable.
  • US 22
  • US 40
  • SR 4
  • SR 309
highway=secondary Other state routes; good connecting roads, such as those that connect cities not directly connected by state routes, or are important connectors between secondary or higher roads. Sections of secondary roads generally should not "dead-end" at lower-class roads. Be sure to add the road to a route relation if applicable.
  • SR 48
  • CR 3 (Franklin Co.)

Ohio State Route 123 southbound, Lebanon Ohio.jpg

highway=tertiary County routes (signed or unsigned) and other major local roads, typically along section lines or connecting towns. Consider adding the road to a route relation if applicable.
  • Loveland–Miamiville Road (CR 75)
highway=unclassified Rural roads, serving mostly farmland or forest properties, of little to no value as through routes. Consider adding the road to a route relation if applicable.
highway=residential City/neighborhood streets not qualifying as tertiary or higher, or rural roads which have become lined with houses.

ref

Tag Description Examples
ref=I ## Interstate highways. Be sure to add the highway to a route relation.
  • I 71
  • I 670

I-271 I-480.jpg

ref=US ## U.S. routes. Be sure to add the highway to a route relation.
  • US 40
ref=SR ## State routes. Do not use OH ### or US:OH ###. Ohio state routes can be distinguished from other state's routes using route relations.
  • SR 13
ref=CR ##
ref=C-##
ref=CH ##
ref=CO ##
County routes. The ref=* tag probably should only be used for roads where the county route number is signed as clearly as on a state route; otherwise, consider using unsigned_ref=* or loc_ref=* instead. The TIGER data often includes name_1=County Highway xx in counties that signpost county routes. Consider adding the road to a route relation if applicable.
ref=TR ##
ref=T-##
ref=TH ##
ref=TWP ##
Township routes. The ref=* tag should only be used for roads where the township route number is signed as clearly as on a state route; otherwise, consider using unsigned_ref=* or loc_ref=* instead. Consider adding the road to a route relation if applicable.

maxspeed

Tag Description Examples
maxspeed=70 mph Rural and suburban freeways (motorway), plus the entire Ohio Turnpike.
  • I-71
  • Ohio Turnpike
maxspeed=65 mph Unsignalized rural expressways (trunk).
maxspeed=60 mph Rural divided highways (primary or secondary). Some urban freeways (motorway). Cleveland, Toledo, Akron interstates
maxspeed=55 mph Older urban freeways and expressways (motorway and trunk).
  • Downtown Cincinnati, Dayton, Columbus interstates
maxspeed=50 mph Some older urban freeways and expressways (motorway and trunk).
  • I-90 Innerbelt
maxspeed=45 mph Some rural tertiary, unclassified roads. The largest suburban surface streets (tertiary).
maxspeed=40 mph Some rural tertiary, unclassified roads. Many urban and suburban collector roads (tertiary).
maxspeed=35 mph State routes outside business districts but within city/village limits (secondary). Residential roads in rural areas (residential). Many urban and suburban feeder roads (unclassified).
maxspeed=30 mph Some urban and suburban roads (unclassified or residential).
maxspeed=25 mph Local streets in residential areas and business districts within city/village limits (residential or unclassified).
maxspeed=15 mph Urban alleys (service).
maxspeed=10 mph Some private roads (service).
maxspeed=5 mph Some private (especially unpaved) roads. Generally, service=parking_aisle (isles) in parking lots. Specify the speed limit using something like maxspeed:conditional=20 mph @ (Mo-Fr 07:45-15:30), which is for school zones. The times of day may vary; see Conditional restrictions for the full syntax.

Note that speed limits in OSM are usually specified in kilometers per hour, so speed limits in the U.S. must be explicitly labeled as miles per hour:

maxspeed=25 mph

Just remember to use a space and lowercase the "mph" abbreviation. See United States roads tagging for more information.

Land use

Tag Description Examples
landuse=residential Residential areas, like subdivisions. Useful for getting subdivision names on the map.

Leisure

Tag Description Examples
leisure=park City and county parks, plus county fairgrounds.
leisure=nature_reserve Nature preserves maintained by local or state agencies or by private organizations. Many state parks are best thought of as nature preserves.