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You will hear the phrase Functional Class or FC a lot when it comes to the standard for road types. According to the US Federal Highway Administration, The concept of functional classification defines the role that a particular roadway segment plays in serving the flow of traffic through the network. Waze has its own interpretation of this system, but it utilizes the state's functional class map to help determine the road type to use.
Check out our Mapping Resources for knowledge on how to use the state's map system to find Functional Classifications Standards in Iowa. From that knowledge, use this chart to determine how the road should be classified using the Waze Standard. Iowa follows this chart completely aside from dirt or gravel roads in rural areas. This exception will be changed as soon as an unpaved road option exists in Waze.
If you have any questions about Functional Class, please use our Community Resourses to reach out to gain further information.Interstate Roads Will be freeways aside from Business Loops and Spurs (Which instead will be a Major Highway). Also, watch for some roads that are Principal Arterial - Other or Other Freeways (colored red or orange) as they could fit the profile of a Freeway. All roads that have to be entered or exited using a ramp, where 3 or more consecutive exits occur, needs to be set as a freeway. A Freeway will end at first direct connection of a road to the highway.
- Freeways will usually only be named the Highway number of the most prominent highway of the section. For instance, If a highway is a State Highway connected with a US highway, then it will be named the US highway.
- If two of the same type connect such as a US highway and another US highway, then the road that stayed on course will be the named highway.
- All highway numbering will be as follows: Interstate: I-XXX, US Highway: US-XXX, Minnesota State Highway: MN-XXX, County Highway: CH-XXX. Notice that there are no spaces between the dashes. The only exception to using the Highway Number would be if there is clear signage that the freeway is known by another name.
A will connect two roads together; however, it will not be used for a simple At-grade connector or in other words a road that doesn't have a different elevation level. There are some exceptions to this rule to understand.
Even veteran editors need to pay attention here! Naming of an entrance and exit ramp correctly is crucial to the users of this app when being navigated around. If the name of the entrance ramp is incorrect it will confuse the experience and may confuse the driver to take the exit absurdly or miss it all together. Please follow these rules:
- Only time to ever type in the word "Exit" in the ramp is when the exit is a numbered exit. The only roads that have numbered exits are exits off an Interstate with the exception of US-52.
- For all Numbered exits, it will start with "Exit XX:" For example, if the Exit is number 114A then you will start the exit name as "Exit 114A:" and there will always be a colon after the exit number
- For non-numbered exits, just start the exit as such, "to" For example, if the exit was to US Highway 169 Northbound, then the exit would be "to US-169 N"
- All numbered highways need to be typed as such: Interstate: I-XXX, US Highway: US-XXX, Minnesota State Highway: MN-XXX, County Highway: CH-XXX, County Road: CR-XX all with no spaces between the Highway type and the number.
- Include as much information in the sign as possible. For example, If the actual sign shows it will take you to County Highway 1 Eastbound and it also takes you to Riverview Rd and Old Shakopee Rd, then the ramp needs to be labeled: "to CH-1 E / Riverview Rd / Old Shakopee Rd" using the slash "/" to separate the different roads to take. Try to match the sign as close as possible.
- If a road splits showing arrow marking under lanes to of which to stay on to continue your course, use ramps for each side. For example: in Burnsville, a person taking I-35 N will have the decision to take I-35W N or I-35E N. The I-35W side is a numbered exit, the other side is just a guided direction to head towards I-35E N. The one side is labeled: "Exit 88A: I-35W / Minneapolis" and the other side is just labeled: "to I-35E / St. Paul". Using ramps here will guide the driver to the right side of the highway.
- For road splits that have 3 or more splits, usually paying attention to the one that splits first will guide you to how to set it up correctly, but it is often best to reach out for support to find the best solution based on the more complexity of an issue.
Any road with the Functional Class (FC) as Principal Arterial - Other (Freeways), colored red or orange on the FC map, will be a Major Highway (MH) if these roads do not fit the standard definition of a Freeway. All US Highways (Such as US-169) will be labeled as a Major Highway regardless of what the FC map shows unless it can be labeled as a freeway.
- Naming of a major highway typically will be in the road number standard: US Highway: US-XXX, Minnesota State Highway: MN-XXX, County Highway: CH-XXX, County Road: CR-XXX; however, pay close attention to the way the signage really is in these areas.
- In town, these highways need to be named as the street names used for house numbering.
- Out of town, should be labeled the same as the street name for house numbering if looking at a 2 lane highway
- and the Highway number for split direction Major highways unless signage clearly indicates it is known by another name
Any road with the Functional Class (FC) as Minor Arterial, colored as green on the FC map. will be a Minor Highway (mH). Also, all State Highways (such as MN-13) will be set at a minimum of a minor highway regardless of the current FC classification from the State of Minnesota unless it is a higher classification or could be considered a freeway.
- Naming of a minor highway typically will be in the road number standard: Minnesota State Highway: MN-XXX, County Highway: CH-XXX, County Road: CR-XXX; however, pay close attention to the way the signage really is in these areas.
- In a town or city, the naming will typically be the street name unless the name of the street is Co Hwy XX where we would change it to CH-XX
- Pay close attention to the name assigned for house numbering. If house numbering suggests using the wording, "State Highway XXX", we need to set the name of the road as such.
Primary streets should only be named the actual name of the street (same name as house numbering indicates). The only exceptions to this rule would be tricky intersections where a county road sign is the only prevalent name of the street.
A will be for any road in a town or city that doesn't fit in the categories above. In rural areas, this will be lightly used for paved roads that cannot be considered a County Road (a rarity in the rural areas). This will be named the same name used for house numbering.
Quick reference chart
Refer to this chart to determine the road type of a given paved public road based on the functional class.
To use this chart, first determine the functional class of a road, and whether it is a signed, numbered highway in a particular highway system.
Where the column for the road's highway system and the row for the road's functional class meet, you will find the proper road type for that particular road.
A number of examples are given below the chart.
Always consult an Area or State Manager if you are unsure of what class to give a road.
|Interstate||Interstate Business Loop/Spur||US Hwy (incl. some special routes)||US Hwy BUS, SPUR, LOOP||State Hwy (incl. some special routes)||State Hwy BUS, SPUR[a], LOOP||County Routes||Locally-maintained|
|example||I-35 N||I-94 Business||US-61||US-2 Business||MN-23||MN-371 Business||CR-15||Robertson St|
|Other Freeways & Expressways[c]||n/a||[g]||[g]||[g]||[g]||[g]||n/a|
|Other Principal Arterial[e]||n/a|
^a When a state highway "SPUR" route is used to connect a state highway with another state highway, a US highway, or an Interstate (i.e., when it is used as a connector/CONN route), use the first state highway column.
^b Also known as Principal Arterial - Interstate.
^c Also known as Principal Arterial - Freeway.
^d Also known as Principal Arterial - Expressway.
^e Also known as Principal Arterial.
^f Also known as Other Arterial.
^g Could also be
- An Interstate Business Loop classified as a Minor Arterial is a .
- A US Highway classified as a Minor Arterial is a .
- A US Highway Spur route classified as a Minor Arterial is a .
- A State Highway classified as an Other Freeway is a .
- A State Highway classified as a Collector is a .
- A County Route classified as a Minor Arterial is a .
- A County Route classified as a Collector is a
- A locally-maintained road classified as an Other Principal Arterial is a .
- A locally-maintained road classified as a Collector is a .
In Iowa we have a set minimum standard for locking roads based on the segment type. Any road of a certain segment type must be locked to at least the rank (level) in the chart below. Roads may be locked higher for protection and special situations (areas with construction, tricky design, frequent mistakes, imaging inaccuracies, and the like), but should not be locked lower.
|Highest rank of connected segments|
Note: Before locking these roads to these standards, you must verify that the name of the road, direction of the road, and turn functionality is correct. If this information is not correct, it should not be locked unless we are having issues with editors in the area. The only exception here is Freeways due to the routing priority. Refer to Unlock Requests if you need a section of road altered or unlocked to correct an issue.Additional: