2.10   Create standard definition for PEVs

Reason for action


Currently, many states have different definitions of PEVs. DMV collection of sales data for electric vehicles often includes legacy electric vehicles (retrofitted vehicles from the 1990s) as well as neighborhood electric vehicles, which makes sales data inconsistent across states. Moreover, different definitions of electric vehicles may pose problems in the future if, for example, neighboring states pass parking regulations, HOV lane exemptions, or charging regulations based on different definitions of electric vehicles.

Implementing the action

  • Participate in multi-state or national dialogues to forge consensus on a standard definition of electric vehicles (see Action 2.1 Share best practices by participating in national and regional dialogues). As a starting point, states can base their definitions off what the federal government awards tax credits to, or what the EPA defines as all electric vehicles (EVs), extended range electric vehicles (EREVs), or plug-in hybrid electric vehicles (PHEVs).
  • Create a memorandum of understanding defining electric vehicles, and get other DOTs and local transportation authorities, if applicable, to agree to the definition.
  • Work with DMV to implement this definition and formalize a process for obtaining PEV data from the DMV.


DOTs can now more easily track trends in PEV ownership across state. These data can allow for cross-state comparison on the progress of PEV deployment as well as a regional understanding of PEV market penetration. The DOT can explore various Research and Policy actions: 2.8 Incorporate PEVs into DOT planning process; 2.9 Use and publicize standardized PEV charging signage; 2.11 Implement PEV parking exemptions; 2.12 Implement PEV HOV/HOT lane exemptions.

Other actions