Michigan law prohibits all drivers from typing, sending, and reading text messages on two-way wireless electronic communications devices, including cell phones, while the vehicle is in motion (MI Comp. Laws Sec. 257.602b).
Drivers are allowed to send messages to report a medical emergency, traffic accident, serious road hazard, situation where personal safety is in jeopardy, or criminal or potentially criminal act.
The law does not apply to programming of global positioning systems or other navigation systems affixed to the vehicle.
Currently, the state does not have a law that prohibits the use of handheld cell phones while driving, with the exception of school bus drivers and drivers of commercial vehicles.
Local ordinances.Under state law, localities may pass ordinances prohibiting the use of handheld electronic devices and cell phones while driving.
Detroit. The city of Detroit prohibits use of handheld cell phones while driving within the city limits. Violation of the law is a secondary offense.