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California’s Solo EV Carpool Access Ends Sept. 30 as Federal Authorization Expires

Congress declined to renew the authority, leaving the state unable to extend the program.

Overview

  • Starting Oct. 1, drivers must meet posted occupancy rules to use HOV lanes or risk citations, according to the DMV.
  • CHP and regional toll agencies will enforce the change, and FasTrak CAV tags will switch to regular tags with full tolls.
  • About 500,000 active Clean Air Vehicle decals will expire, with more than 1 million issued since the program began.
  • California’s AB 2678 sought to extend access through 2027, but the state law cannot take effect without renewed federal authorization.
  • Similar clean‑vehicle HOV access programs in 13 states end with the federal lapse, aligning with the Sept. 30 sunset of federal EV tax credits.