The Traffic Safety Enhancement Act of 2025 amends federal transportation law to allow roundabouts to be built as eligible projects under the Surface Transportation Block Grant Program, which provides federal funding to states and localities for road and highway improvements. This change expands what types of traffic safety infrastructure projects can receive federal dollars, potentially making it easier for communities to invest in roundabouts as an alternative intersection design. The bill affects state departments of transportation and local governments that manage road construction and safety projects. While the legislation text provided does not specify new funding amounts or implementation timelines, it allows existing federal transportation grant money to support roundabout construction, which traffic safety experts generally view as beneficial for reducing crash severity at intersections.
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