Bank regulation covers reserve requirements, capital requirements and restrictions on:

1. Regulation falls into a number of named categories. 2. Two of them govern how much a bank must hold back. 3. The third restricts the types of investments banks may make. 4. Banks are not permitted to invest in assets perceived as too risky. _Source: OpenStax Principles of Macroeconomics 3e (CC BY 4.0), Ch 15 'Monetary Policy and Bank Regulation', sections 15.1-15.5_