Rule 3. The department shall purchase, maintain, and retain ownership of breath alcohol test instruments. At least 1 breath alcohol test instrument must be placed in each county at a location determined by the department. Additional instruments must be placed, maintained, or moved by the department according to considerations including, but not limited to, population density, proximity of additional instruments, historical usage, instrument accessibility, and the department's ability to adequately maintain the instruments.
Mich. Admin. Code R. 257.993