Cal. Gov't Code § 8879.70

(a) Eligible projects shall include all of the following:
1. (1) Improvements to the state highway system, including, but not limited to, all of the following:
  1. (A) Major rehabilitation of an existing segment that extends the useful life of the segment by at least 15 years.
  2. (B) New construction to increase capacity of a highway segment that improves mobility or reduces congestion on that segment.
  3. (C) Safety or operational improvements on a highway segment that are intended to reduce accidents and fatalities or improve traffic flow on that segment.
2. (2) Improvements to transit facilities, including guideways, that expand transit services, increase transit ridership, improve transit safety, enhance access or convenience of the traveling public, or otherwise provide or facilitate a viable alternative to driving.
3. (3) The acquisition, retrofit, or rehabilitation of rolling stock, buses, or other transit equipment, including, but not limited to, maintenance facilities, transit stations, transit guideways, passenger shelters, and fare collection equipment with a useful life of at least 10 years. The acquisition of vans, buses, and other equipment necessary for the provision of transit services for seniors and people with disabilities by transit and other local agencies is an eligible project under this paragraph.
4. (4) Improvements to the local road system, including, but not limited to, both of the following:
  1. (A) Major roadway rehabilitation, resurfacing, or reconstruction that extends its useful life by at least 15 years.
  2. (B) New construction and facilities to increase capacity, improve mobility, or enhance safety.
5. (5) Improvements to bicycle or pedestrian safety or mobility with a useful life of at least 15 years.
6. (6) Improvements to mitigate the environmental impacts of new transportation infrastructure on a locality’s or region’s air quality or water quality, commonly known as “urban runoff,” including, but not limited to, the installation of catch basin screens, filters, and inserts, or other best management practices for capturing or treating urban runoff.
(b) For purposes of the program, a separate phase or stage of construction for an eligible project may include mitigation of the project’s environmental impacts, including, but not limited to, soundwalls, landscaping, wetlands or habitat restoration or creation, replacement plantings, and drainage facilities.