- Local governmentsEnables use of federal STBG funds to offset local costs for roundabout construction projects.
- Potential benefitMay reduce severe crash frequencies at converted intersections, increasing overall traffic safety.
- Potential benefitCan improve traffic flow and reduce vehicle idling and associated emissions at treated intersections.
Traffic Safety Enhancement Act of 2025
Referred to the Subcommittee on Highways and Transit.
This bill amends 23 U.S.C. §133(b) to add “Construction of roundabouts” as an eligible project under the Surface Transportation Block Grant Program (STBG). It simply makes roundabout construction an allowable use of STBG funds; it does not specify design standards, funding levels, or additional requirements.
Design safeguards: liberals want pedestrian/cyclist protections; conservatives emphasize local choice.
Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clearly identifies the statutory provision to change and adds a single eligible project category, but it provides minimal explanatory, fiscal, definitional, or oversight detail.
This bill amends 23 U.S.C. §133(b) to add “Construction of roundabouts” as an eligible project under the Surface Transportation Block Grant Program (STBG).
It simply makes roundabout construction an allowable use of STBG funds; it does not specify design standards, funding levels, or additional requirements.
Content is low-controversy and implementable, but as a standalone statutory tweak it faces low legislative priority and procedural hurdles.
Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clearly identifies the statutory provision to change and adds a single eligible project category, but it provides minimal explanatory, fiscal, definitional, or oversight detail.
Design safeguards: liberals want pedestrian/cyclist protections; conservatives emphasize local choice.
Who stands to gain, and who may push back.
These are examples from the analysis, not a ranked list of the most-affected groups.
- Potential burdenCould divert limited STBG dollars away from other highway, transit, or pedestrian projects.
- Potential burdenConstruction and land acquisition costs for roundabouts can be higher than signal modifications.
- Potential burdenPoorly designed roundabouts can pose accessibility and safety challenges for pedestrians and bicyclists.
Why the argument around this bill splits.
Design safeguards: liberals want pedestrian/cyclist protections; conservatives emphasize local choice.
Likely supportive overall because roundabouts can reduce serious crashes and vehicle idling.
Would want safeguards for pedestrians, cyclists, transit access, and equity in project selection.
Generally favorable as a modest, evidence-backed expansion of eligible projects that preserves local choice.
Sees value in evaluation, cost-effectiveness, and design standards before broad rollout.
Cautious but mildly supportive because the bill simply allows existing federal funds to be used for a local infrastructure option.
Concerned about federal nudging of specific design choices and taxpayer cost.
The path through Congress.
Reached or meaningfully advanced
Reached or meaningfully advanced
Still ahead
Still ahead
Still ahead
Content is low-controversy and implementable, but as a standalone statutory tweak it faces low legislative priority and procedural hurdles.
- No Congressional Budget Office cost or score provided
- Whether it will be attached to a larger transportation package
Recent votes on the bill.
No vote history yet
The bill has not accumulated any surfaced votes yet.
Go deeper than the headline read.
Design safeguards: liberals want pedestrian/cyclist protections; conservatives emphasize local choice.
Content is low-controversy and implementable, but as a standalone statutory tweak it faces low legislative priority and procedural hurdles.
Relative to its intended legislative type, this bill is a narrowly focused substantive amendment that clearly identifies the statutory provision to change and adds a single eligible project category, but it provides min…
Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.