Requires signage on state highways designating where there are zero-emission charging and refueling stations nearby

The bill was amended to add a funding requirement and narrow the geographic scope of where zero-emission vehicle charging signs can be installed. The original version allowed signs anywhere within three miles of any roadway exit, while the amended version restricts this to interstate or primary highway system exits only. Additionally, the amendment adds language requiring that the program be implemented only if there are sufficient funds appropriated for it.