Train horns and quiet zones Guide 02
How a city gets a railroad quiet zone
A city or another responsible public authority can establish a quiet zone by meeting FRA's requirements. The work starts with a crossing review, an agreed set of crossing measures and a funded plan.
For residents, city staff and corridor planners.
A public authority must lead the process.
Residents can request a study, but the authority responsible for traffic control or law enforcement at the public crossings establishes the quiet zone. Start with city or county transport staff.
FRA rules (49 CFR Part 222) govern how a quiet zone is set up. The notices and conditions depend on the proposed zone and its crossings.
Sources: FRA: Train Horns and Quiet Zones; 49 CFR Part 222.
The crossing review determines the measures needed.
The review considers every affected crossing and the effect of removing routine horns. Measures in the rule include arrangements such as medians or gates covering all approaches, subject to specific design conditions.
Reported gate counts cannot establish compliance or prescribe a design. The responsible agencies need an on-site review and the rule's calculations.
Sources: 49 CFR Part 222.
Reported warning equipment differs across public crossings.
| Warning equipment | Public crossings (Crossings) |
|---|---|
| Gates | 55,319 |
| Flashing lights, no gates | 13,756 |
| Signs only | 52,764 |
| Other or not reported | 4,327 |
Categories describe reported equipment. They do not confirm its condition or establish which upgrade a crossing needs.
Ask for a corridor estimate, not a standard price.
Costs depend on warning devices, road geometry, utilities, land, design and maintenance. Union Pacific gives an example range of $300,000 to $500,000 for a four-quadrant gate system. This is the railroad's published estimate, not a current quote for your site.
Ask for engineering, construction, railroad work and ongoing responsibilities to be priced separately. A treatment price for one crossing is not the cost of a whole quiet zone.
Sources: Union Pacific: quiet-zone project costs.
The timeline depends on design, notices and construction.
There is no single completion time for every quiet zone. Land acquisition, new warning devices and road work can each affect the schedule.
Ask for dated milestones covering the study, coordination, funding, notices, construction and start of operation. A council vote or funding award alone does not mean horns stop.
Sources: 49 CFR Part 222.
Check the city's latest notice about suspensions.
Quiet-zone status can change. Read the current local notice before telling residents that horns will stop or a suspension has ended.
San Antonio's D1 South update dated 25 September 2026 describes ongoing work in a suspended quiet zone, with re-inspection to follow. That notice is not a promise that horns have stopped. Confirm the latest notice and affected crossings before applying it to one home.
Sources: City of San Antonio: quiet-zone updates.
Build a crossing table for the corridor.
Record each crossing ID, road, railroad, warning devices and inventory date. Add the city's proposed work and the source supporting its cost.
Record history can show when a warning device field changed. It does not establish the construction date or prove which grant funded it.
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