Regional plans typically cover areas that cross how many government units?

Regional plans are designed to address issues that span across various jurisdictions and often aim to solve problems that cannot be effectively managed at a single local level. Such plans typically encompass areas that cross more than one government unit, which can include municipalities, counties, or even states. This broader perspective allows for coordinated strategies concerning transportation, land use, environmental protection, and infrastructure development that benefit the region as a whole.

By covering multiple government units, regional plans ensure that policies are consistent and collaborative, helping to prevent conflicts and overlapping regulations that may arise when separate jurisdictions operate independently. This collaborative approach is essential for successful planning and implementation of projects that may impact communities beyond the boundaries of a single local government. Therefore, the correct answer reflects the fundamental purpose of regional planning in addressing inter-jurisdictional challenges by involving multiple governing bodies.