Committee advances bill to delay some axle‑weight reductions for zero‑emission buses after debate over pavement damage

Assemblymember Alex Lee asked the Senate Transportation Committee to advance AB 19 44, a bill that would postpone portions of a scheduled reduction in maximum axle weights for zero‑emission buses enacted in 2015. Lee said the statute’s declining weight schedule assumed faster improvements in battery weight than have materialized, leaving transit agencies with few vehicles that meet tighter limits and still have the range to serve longer routes.

"This adjustment ensures that transit agencies continue to provide reliable and quality public transportation while we're working towards our zero‑emission goals," Assemblymember Alex Lee said, urging an aye vote.

Brendan Rapicchio, legislative advocate for the California Transit Association, testified that California Air Resources Board’s Innovative Clean Transit regulation requires transit agencies to buy increasing shares of zero‑emission vehicles and that extended‑range buses need more batteries — and therefore more weight. He said AB 19 44 would postpone the schedule by which certain axle weight limits take effect without changing the statutory maximum set in 2015.

"This bill acknowledges that the descending schedule assumed a more aggressive pace of technology advancement than what has been realized," Rapicchio said.

Damon Conklin of the League of California Cities opposed the bill, telling the committee that pavement deterioration is driven primarily by axle load and that even modest increases can exponentially raise damage and life‑cycle costs for local governments. He cited a committee analysis of prior legislation and a California Transportation Commission (CTC) study and said local agencies face a roughly $74,000,000,000 deferred maintenance backlog.

"Authorizing heavier transit vehicles will only accelerate pavement deterioration and increase long‑term maintenance obligations," Conklin said, urging the committee to consider local infrastructure impacts.

Senator Gallardo pressed for studies on pavement, tire wear and stormwater impacts, and said he did not plan to support the bill based on the concerns raised. Senator Ochoate expressed support for the state’s zero‑emission goals but questioned whether manufacturers could meet the original timeline for weight reductions.

Supporters and the bill’s author responded that manufacturers have not uniformly signaled confidence they can meet the earlier schedule, and that AB 19 44 preserves the 2015 maximum axle weight while giving more time for industry improvements.

After discussion and the establishment of a quorum, the committee recorded a vote to report AB 19 44 out of committee with a majority in favor; the transcript records the bill as reported out "10 to 3." The committee left some counts "on call" during the roll calls while members completed attendance checks.

What’s next: AB 19 44 was reported out of the Senate Transportation Committee and will proceed according to the Senate’s further processing rules.