---
title: "How Road Changes Actually Happen"
url: "https://commonwaysystem.org/guide/make-it-happen/"
description: "A plain-language method for finding out who has authority over a road and how to actually request a change, from a faded stripe to a new stop sign."
updated: "2026-09-04"
---

# How Road Changes Actually Happen

Getting a street pattern built is rarely just a design question. It's a process question: who has the authority to approve a change, how that authority typically handles a request like yours, and what actually has to happen before anything gets painted, signed, or poured.

That process varies by city, county, and state, sometimes down to the individual road. This page can't give you the phone number to call. What it can give you is a method: four questions that will get you to the right authority and the right kind of request, wherever you are.

This page doesn't cover private roads or homeowners' association jurisdiction beyond a short note under Question 2 below, since that's a routine branch of the method rather than an exception to it. It also doesn't cover Corridor Preservation, a separate, opt-in program for reserving right-of-way for a distant future facility, which has almost nothing to do with the everyday process covered here. See [Legal & Planning Mechanisms](https://commonwaysystem.org/guide/legal-planning-mechanisms.md) for the tools that reserve land and commit a jurisdiction to a policy, including corridor preservation, ahead of a request like the one this page walks through.

## Question 1: What are you trying to do?

Start here, because the answer changes everything downstream.

**A. Restore or maintain something that already exists in its current, already-approved form.** A faded stripe, a broken sign, a pothole. The need for this was already established when it was first installed, so it doesn't need to be justified again.

**B. Add or change something at a specific location that isn't there today, or that currently works differently.** A new stop sign, a new crosswalk, a changed signal, a road diet. This is new, so someone will need to justify it before it happens.

**C. Change the underlying design standard everywhere this situation occurs, not just at one location.** This is the one genuinely location-independent path on this page. It skips the rest of this method entirely and routes straight to your local government's comprehensive plan or ordinance process, the same process that would apply to any other proposed change in local law or policy.

If you picked A or B, keep going. If you picked C, this page's remaining questions won't apply to you the way they apply to a single-location request.

## Question 2: Is the road public or private?

**Private roads have no government jurisdiction at all.** Authority sits with the HOA board or the private owner, governed by the community's declaration and bylaws, not by any public process. But two things are worth knowing if you're dealing with a private road:

Traffic control devices an HOA installs without real engineering backing have been challenged and thrown out in court as unenforceable, in at least one case tied to a fatality dispute.[1] A private road isn't a free pass to install whatever seems reasonable.

And in some states, that private status can be partly, deliberately lifted. Florida is one example: a board majority vote can convert enforcement (not ownership) so that state traffic law and police authority apply, as an all-or-nothing election.[2] The road stays privately owned, but it starts behaving like a public one for enforcement purposes.

**Public roads continue to Question 3.** If you're not sure whether a road is public or private, check for a blue street sign (a private-road marker in some jurisdictions), look up your jurisdiction's own road ownership map if it publishes one, or call your local public works department and ask. Several jurisdictions' own published guidance tells residents to do exactly this rather than guess.

## Question 3: Which government has authority?

This is not a single clean lookup, and it's the question most likely to surprise a newcomer. It has four parts.

**3a. Start with ownership, but don't stop there.** City, county, state, tribal, or federal ownership is the obvious first check, but which layer of government owns which roads is itself inconsistent from place to place. A state highway running through a small town might be state property in every sense except that the town controls its traffic signals below a certain population size.[3] Ownership tells you where to start looking, not necessarily where the request ends up.

**3b. Check whether authority splits by function on this exact road.** Signal timing, road grade, underground utilities, and sidewalks can each belong to a different authority on the same physical stretch of road, even when one government clearly owns the pavement itself. Don't assume the entity that owns the road controls every part of a request about it.

**3c. Check for overlapping sovereignty.** Tribal land crossed by a state highway is the clearest example: a change may require joint approval from two authorities, with neither one able to act alone.

**3d. If more than one authority holds a piece of your request, contact each one for its specific piece.** Don't assume one call covers everything once you've found more than one authority involved.

Jurisdiction can fracture in ways well beyond what these four steps anticipate: by a population threshold, by a city that consolidated with its county but left specific municipalities out, by a route number that means something different once you cross into a particular city's limits. If your situation feels unusual once you start asking around, the [reference page on jurisdiction variants](https://commonwaysystem.org/guide/make-it-happen/jurisdiction-variants.md) catalogs the specific, documented structures that don't follow this page's general method cleanly.

## Question 4: How does that government process this?

Once you know which government (or governments) actually holds the authority, the request itself follows one of several tracks, depending on what you're asking for.

**4a. Direct service request.** Fits routine maintenance authority. Staff can act without a study, because the need was already established when the thing was first installed. This is the track for most of what Question 1 sorted into "restore or maintain."

**4b. Engineering study or warrant.** Triggered by adding or changing something that isn't already there. For devices covered by the Manual on Uniform Traffic Control Devices (MUTCD), this is a genuine federal standard, applied through state adoption.[4] Every state must adopt the MUTCD as-is, adopt it with a state supplement, or write its own state MUTCD in substantial conformance, and the specific approach varies by state.[4]

This isn't bureaucracy for its own sake. It exists because research shows unwarranted devices actually reduce safety: drivers learn to treat unjustified signs and signals as optional, which lowers compliance even at nearby locations where a device really is warranted.[5] A warrant is proof of need, required before the device goes in, not after.

Not everything runs through MUTCD's warrant process, though. Speed humps are the clearest example: because MUTCD doesn't cover them, states and cities have each written their own separate petition and eligibility criteria, and these vary widely even within a single state.[6] Whatever number or percentage you find published for your own jurisdiction, treat it as that jurisdiction's own rule, not a national standard.

And a warrant, once required, isn't a formality that agreement among neighbors can skip. Unanimous neighborhood support does not exempt a request from this process. An engineering study can still be required, and a request can still be denied, even when every affected property owner agrees.[7]

At an intersection specifically, this engineering study can take a more formal, staged shape than a warrant lookup, an Intersection Control Evaluation comparing control alternatives, or a Road Safety Audit examining an existing location for safety issues. See [Decision & Evaluation Processes](https://commonwaysystem.org/guide/decision-evaluation-processes.md) for how each one works.

**4c. Capital project.** Needed once a request's cost exceeds routine maintenance authority, whether it's a new addition or a larger fix. Timeline depends heavily on the funding source. Projects using federal funds must go through a Metropolitan Planning Organization (MPO) and appear in that region's Transportation Improvement Program before federal money can be released, which can add years.[8] Residents cannot approach an MPO directly; a local government has to sponsor the project first.[9]

A capital project also raises two questions this page doesn't answer on its own: where the money actually comes from, beyond a federal grant, and whether "capital project" has to mean full permanent construction from day one. See [Funding & Financing Mechanisms](https://commonwaysystem.org/guide/funding-financing-mechanisms.md) for the first, and [Construction Methodology & The Build Spectrum](https://commonwaysystem.org/guide/construction-methodology-spectrum.md) for the second, since a project can often move through a demonstration, pilot, or quick-build stage before committing to permanent construction.

**4d. Legislative or public-hearing action.** Required when state law or local code treats the change as carrying legal or political weight, independent of its physical scale. Installing or removing a mid-block crosswalk in some cities requires exactly this kind of legislative action, even though physically it's a small change.[10]

**4e. Already-adopted-plan implementation.** If the specific change you're asking about was already designated in a plan the city or county previously adopted, such as a bike master plan, it can often proceed as ordinary engineering work folded into a scheduled project, with no fresh public process.[11] The public input already happened when the plan itself was adopted.

**4f. Compliance-triggered work.** Some changes aren't requested by anyone at all. The clearest example is ADA curb ramps: federal law requires them whenever a street is "altered," such as during resurfacing, regardless of whether any resident asked.[12] If a qualifying project is already scheduled nearby, this kind of change may already be coming without a request from you.

**4g. Rights-based accommodation channel.** Separate from the ordinary public works request path, some jurisdictions maintain a dedicated process specifically for disability-related access barrier requests, evaluated on different terms and by a different office than a general request.[13] If your request is about a mobility or access barrier specifically, check whether your jurisdiction runs a channel like this before filing it as a general request.

## Jurisdiction can fracture in ways worth expecting

Even once you've worked through all four questions, it's worth knowing that "who's in charge here" can turn out to be genuinely surprising, not just unfamiliar. In Baltimore, the state highway administration maintains numbered state routes in every Maryland county except Baltimore City, where the city's own department of transportation maintains those same state highways instead, meaning a route number tells you nothing reliable about who to call once you're inside certain city boundaries.[14] In parts of Colorado, a newly built subdivision's roads can be financed and governed by a metropolitan district, an independent unit of government with its own elected board and taxing authority, created by the developer before residents ever moved in, layered underneath the city or county residents assume is in charge.[15]

These aren't edge cases invented for this page. They're real, documented structures, and there are more like them. The [reference page on jurisdiction variants](https://commonwaysystem.org/guide/make-it-happen/jurisdiction-variants.md) is where to look if your own situation doesn't fit the general method cleanly.

## A decision isn't always final

Whichever track above produced an answer, that answer isn't necessarily the end of the story. A decision reached through any of these tracks can be challenged, and potentially reversed, through the courts. This has happened with contested bike lanes and road diets in more than one city.[16] A denial, or an approval, is a decision made through a specific process. It isn't automatically the last word.

## References

1.  Precedent-based HOA Talk forum discussion, DIY stop signs ruled unenforceable after fatality dispute. [https://www.hoatalk.com/Forum/tabid/55/forumid/1/postid/229452/view/topic/Default.aspx](https://www.hoatalk.com/Forum/tabid/55/forumid/1/postid/229452/view/topic/Default.aspx)
2.  Legal / regulatory Florida Statute 316.006(2)(b)4 and (3)(b)5, HOA board election of state traffic law enforcement on private roads. Summary via LegalClarity: [https://legalclarity.org/florida-private-road-laws-traffic-regulations-explained/](https://legalclarity.org/florida-private-road-laws-traffic-regulations-explained/)
3.  Legal / regulatory Revised Code of Washington 47.24.020, state DOT authority over traffic signals in incorporated towns below a population threshold. [https://apps.leg.wa.gov/rcw/default.aspx?cite=47.24.020](https://apps.leg.wa.gov/rcw/default.aspx?cite=47.24.020)
4.  Legal / regulatory 23 CFR 655.603, MUTCD as the national standard for traffic control devices; state adoption options. [https://www.law.cornell.edu/cfr/text/23/655.603](https://www.law.cornell.edu/cfr/text/23/655.603) (Supplementary: Kittelson, "What You Need to Know About the New MUTCD," state adoption breakdown: [https://www.kittelson.com/ideas/what-you-need-to-know-about-the-new-mutcd/](https://www.kittelson.com/ideas/what-you-need-to-know-about-the-new-mutcd/))
5.  Evidence-based Research synthesis on unwarranted stop signs reducing driver compliance. [https://archive.rcgov.org/ca20120221/PW021412-16.pdf](https://archive.rcgov.org/ca20120221/PW021412-16.pdf)
6.  Evidence-based Iowa State University study on speed humps, confirming exclusion from MUTCD and resulting jurisdiction-by-jurisdiction criteria. [https://cityofpleasantridge.org/wp-content/uploads/2019/01/Study-on-Speed-Humps-Iowa-State-University.pdf](https://cityofpleasantridge.org/wp-content/uploads/2019/01/Study-on-Speed-Humps-Iowa-State-University.pdf)
7.  Precedent-based Kansas City reporting on engineering-study requirement despite unanimous neighborhood support. [https://thebeaconnews.org/stories/2024/11/18/request-crosswalk-stop-sign-in-kansas-city/](https://thebeaconnews.org/stories/2024/11/18/request-crosswalk-stop-sign-in-kansas-city/)
8.  Legal / regulatory 23 CFR Part 450, federal definition and requirements for the Transportation Improvement Program. [https://www.ecfr.gov/current/title-23/chapter-I/subchapter-E/part-450](https://www.ecfr.gov/current/title-23/chapter-I/subchapter-E/part-450)
9.  Precedent-based Indianapolis MPO, sponsor-to-TIP project process. [https://www.indympo.org/funding/irtip](https://www.indympo.org/funding/irtip)
10.  Precedent-based San Francisco Better Streets, public hearing and SFMTA Board action requirement for mid-block crosswalk installation/removal. [https://sfbetterstreets.org/find-project-types/pedestrian-safety-and-traffic-calming/crosswalks/index.html](https://sfbetterstreets.org/find-project-types/pedestrian-safety-and-traffic-calming/crosswalks/index.html)
11.  Precedent-based Sacramento example of plan-adoption absorbing future public process for bikeway implementation. [https://www.pedbikeinfo.org/resources/resources\_details.php?id=4693](https://www.pedbikeinfo.org/resources/resources_details.php?id=4693)
12.  Legal / regulatory DOJ/FHWA joint guidance on ADA Title II curb ramp requirements triggered by street alteration. [https://archive.ada.gov/doj-fhwa-ta.htm](https://archive.ada.gov/doj-fhwa-ta.htm)
13.  Precedent-based Los Angeles Access Request Program, disability-specific access barrier remediation process. [https://sidewalks.lacity.gov/access-request-program-frequently-asked-questions](https://sidewalks.lacity.gov/access-request-program-frequently-asked-questions)
14.  Precedent-based Maryland Department of Transportation State Highway Administration, road maintenance jurisdiction excluding Baltimore City. [https://roads.maryland.gov/mdotsha/pages/index.aspx?PageId=9](https://roads.maryland.gov/mdotsha/pages/index.aspx?PageId=9)
15.  Legal / regulatory Colorado Special District Act, Title 32, Article 1, C.R.S., governing metropolitan district formation and authority. Summary via Colorado Division of Local Government: [https://dlg.colorado.gov/special-districts-brief-review-for-residents](https://dlg.colorado.gov/special-districts-brief-review-for-residents)
16.  Precedent-based NYC Streetsblog reporting on court-ordered removal of a half-installed Queens bike lane under Article 78 challenge. [https://nyc.streetsblog.org/2025/12/05/queens-judge-orders-city-to-nix-half-installed-queens-bike-lane](https://nyc.streetsblog.org/2025/12/05/queens-judge-orders-city-to-nix-half-installed-queens-bike-lane)