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H 3753

An Act relative to setting deadlines to electrify the commuter rail

194th Legislature (2025-2026) Introduced by Mike Connolly and 18 co-sponsors

Massachusetts bill mandates MBTA deadlines for converting diesel commuter rail to electric propulsion to reduce emissions and improve air quality.

Accompanied a study order, see H5360
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Bill Summary · H 3753

Legislative bill overview

H 3753 establishes mandatory deadlines for the Massachusetts Bay Transportation Authority (MBTA) to electrify the commuter rail system. The bill sets specific timelines requiring the conversion of diesel-powered commuter trains to electric propulsion across the network. This represents a significant infrastructure modernization aimed at reducing transportation emissions and improving air quality.

Why is this important

Commuter rail electrification directly impacts air quality in the Boston metropolitan region and surrounding communities, particularly along rail corridors. The deadline-driven approach creates accountability for a major environmental and public health initiative while signaling commitment to climate goals. For riders, electrified trains typically offer improved acceleration, quieter operation, and reduced maintenance costs over time.

Potential points of contention

  • Cost and funding: Full commuter rail electrification requires substantial capital investment; the bill's deadlines may not align with available state and federal funding timelines or realistic construction schedules
  • Timeline feasibility: Electrifying an entire rail network involves complex infrastructure upgrades; aggressive deadlines could face engineering and logistical challenges that delay implementation or increase costs
  • Service disruption: Conversion work may require temporary service reductions or route modifications, affecting daily commuters during construction phases
  • Technology and vendor dependencies: Long lead times for purchasing electric rolling stock and specialized infrastructure components could conflict with statutory deadlines

Compiled from official sources — confirm details with the bill’s official record.

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