
Another driver ran a red light, turned in front of you or glanced at a phone, and now you’re hurt. If you keep replaying the crash and asking what the other driver should have done, that’s a normal reaction. The short answer: every driver owes everyone on the road a legal duty of reasonable care, and traffic laws spell out much of it. When a driver breaks one of those laws and that helps cause a crash, the violation can help prove fault. Here are five duties every driver has, with Michigan’s rules in the boxes marked “In Michigan.”
In a national survey of car accidents from 2005 to 2007, the National Highway Traffic Safety Administration (NHTSA) assigned the “critical reason,” the last event in the chain leading to the crash, to the driver in about 94% of them. NHTSA cautions that a critical reason isn’t meant to be read as the cause of the crash or as assigning fault (DOT HS 812 115, 2015). See also why some say “crash” instead of “accident”.
Hurt by a driver who broke the rules of the road? Get a free case review. Four quick questions, no cost, no obligation.
What legal duty does every driver owe?
Reasonable care. Negligence is failing to use the care a reasonable person would use in the same circumstances. A negligence claim typically has to show that the other driver owed you a duty, broke it, and caused your harm (Cornell Law School’s Legal Information Institute, or Cornell LII). Creating a risk of harm to others is one way a duty arises (Cornell LII), and every driver does that. Traffic laws turn much of that duty into specific rules.
What are the five duties every driver owes?
Each duty below comes with the Michigan law behind it and what breaking it can mean.
1. Drive at a speed that’s safe for the conditions
The posted limit is a maximum, not a promise that the speed is safe. On ice, in fog or in heavy traffic, a careful speed can be well below the sign.

2. Keep your eyes on the road and your phone out of your hand
In 2024, crashes involving distracted drivers killed 3,208 people in the United States and injured an estimated 315,167 more. Distraction includes eating, talking to passengers and adjusting the radio, not just phones (NHTSA).
3. Drive sober
Alcohol isn’t the only thing that counts. Drugs do too.
4. Yield the right of way and leave room to stop
Right-of-way rules decide who waits. Following-distance rules decide how much room to leave.
5. Carry insurance, and stop and help after a crash
The last duty covers what a driver owes when things go wrong.
How does breaking a traffic law help prove fault?
In many states, breaking a safety law without an excuse makes a driver negligent as a matter of law, a rule called negligence per se, and traffic violations are its most common use. The injured person still has to prove the violation caused the harm (Cornell LII). Michigan uses a presumption instead.
So fault is proved with the facts: what witnesses saw, photos, video and the damage to each vehicle. The other driver’s insurer handles claims like yours every day and may argue that the violation was excused, didn’t cause the crash or was matched by a mistake of yours. See how fault is decided after a crash and how causation is proved.
A made-up example: A driver turning left hits you as you go straight through a green light. Turning without yielding breaks MCL 257.650(1), so a jury may infer the driver was negligent unless the driver shows an excuse. If the jury also finds your speeding helped cause the crash, the fault is split and your damages go down by your share.
Not sure which rule the other driver broke, or how to prove it? Get a free case review. Four quick questions, no cost, no obligation.
What if you broke a traffic rule too?
In most states, your share of the fault reduces what you recover rather than ending the claim, though some cut off recovery at 50% or 51% and a few bar it for any fault at all (Cornell LII). See each state’s shared-fault rule.
What to do next
- Get medical care, and tell every provider how the crash happened.
- Write down what the other driver did while it’s fresh: speed, lane, signals, phone use, signs of drinking and anything they said. Keep photos, witnesses’ names and the crash report number (how to preserve crash evidence).
- Tell your own insurer in writing. Michigan PIP notice is due within one year of the crash (MCL 500.3145(1)). You have no contract with the other driver’s insurer, so you don’t have the same options you would with your own insurer (Texas Department of Insurance). Get advice before you give it a recorded statement.
- Get a free case review before any deadline gets close. Tell us what happened, or compare Michigan injury lawyers, and get any fee agreement in writing.
What waiting can cost
- Evidence. Video gets recorded over, memories fade and damaged cars get repaired.
- Your PIP benefits. Without written notice or a payment within a year, you can lose the right to sue for Michigan PIP benefits (MCL 500.3145(1)).
- A claim against a bar or store. Notice is due within 120 days after you hire a lawyer for it, and the lawsuit within 2 years of the injury (MCL 436.1801(3)).
- Your lawsuit. Most Michigan injury lawsuits must be filed within three years (MCL 600.5805(2)).
What a good outcome looks like
The duty the other driver broke is identified and proved with evidence, not assumed from a ticket or an adjuster’s first guess. Your medical bills and lost pay are covered while you heal, any fault put on you matches what really happened, and every deadline is met. From wondering whether the other driver did anything wrong to knowing which duty they broke, how to prove it and what it means for your claim.
For safer habits, see our defensive driving tips and, for new drivers, what to do after a crash as a teen driver. Or browse all our car, truck and motorcycle accident guides.
Frequently asked questions
What legal duties do drivers owe other people on the road?
Every driver must use reasonable care: the care a reasonably careful person would use in the same situation (Cornell LII; M Civ JI 10.02). Traffic laws spell out specific duties. In Michigan, they include driving at a careful and prudent speed (MCL 257.627), not holding or using a phone while driving (MCL 257.602b), driving sober (MCL 257.625), yielding the right of way and not following too closely (MCL 257.643, 257.649, 257.650), carrying no-fault insurance (MCL 500.3101), and stopping to exchange information and help anyone hurt after a crash (MCL 257.617a, 257.619).
Is breaking a traffic law automatically negligence?
In many states it is, unless the driver had an excuse, a rule called negligence per se (Cornell LII). Michigan treats it as a rebuttable presumption instead: a jury may infer negligence from the violation unless the driver shows a legally sufficient excuse, such as an emergency the driver didn't create, and the jury then decides whether the violation caused the crash (Klanseck v Anderson Sales & Service, 1986; M Civ JI 12.01, 12.02).
Does the other driver's traffic ticket prove fault in Michigan?
No. Evidence that a driver was convicted of, or found responsible for, a traffic violation can't be admitted in a civil case (MCL 257.731), even if the driver admitted responsibility for the ticket (MCL 257.6b). Fault is proved with the facts instead, such as witnesses, photos, video and the damage to each vehicle.
The driver who hit me was drunk. Does that prove my case?
It can help, but it isn't automatic. Driving while intoxicated breaks MCL 257.625, and a jury may infer negligence from that violation, but it still decides whether the violation caused the crash (M Civ JI 12.01). Evidence of a drunk-driving conviction can't be admitted in the civil case (MCL 257.731). If a business licensed to sell alcohol served the driver while visibly intoxicated, or served a driver under 21, and that helped cause your injury, you may also have a claim against it. Written notice is due within 120 days after you hire a lawyer for that claim, and the lawsuit within 2 years of the injury (MCL 436.1801, 436.1109).
Can I hold my phone at a red light in Michigan?
No. Since June 30, 2023, Michigan law bars holding or using a phone while operating a vehicle, and that includes being stopped in traffic, at a light or at a stop sign. Hands-free or voice use that takes no more than a single tap, press or swipe is allowed, and so is calling 911 in an emergency. A first violation means a $100 fine or 16 hours of community service, or both, and the fine doubles for a driver at fault in a crash (MCL 257.602b).
Does it matter that I wasn't wearing a seat belt?
It can reduce what you recover from the at-fault driver, but in Michigan by no more than 5%. Failing to wear a required seat belt "may be considered evidence of negligence," but that negligence "must not reduce the recovery for damages by more than 5%" (MCL 257.710e(8)). Your PIP benefits are paid without regard to fault (MCL 500.3105(2)).
Sources
- Critical Reasons for Crashes Investigated in the National Motor Vehicle Crash Causation Survey (DOT HS 812 115, February 2015) · National Highway Traffic Safety Administration
- Distracted Driving in 2024 (DOT HS 813 790, April 2026) · National Highway Traffic Safety Administration
- Negligence (Wex legal dictionary) · Legal Information Institute, Cornell Law School
- Negligence per se (Wex legal dictionary) · Legal Information Institute, Cornell Law School
- Comparative negligence (Wex legal dictionary) · Legal Information Institute, Cornell Law School
- Michigan Model Civil Jury Instructions (updated July 21, 2026): M Civ JI 10.02, 12.01 and 12.02 · Michigan Supreme Court
- Klanseck v Anderson Sales & Service, Inc, 426 Mich 78 (1986) · Caselaw Access Project, Harvard Law School
- MCL 257.20, "Highway or street" defined · Michigan Legislature
- MCL 257.601, Applicability of chapter to operations on highways · Michigan Legislature
- MCL 257.627, Speed limits; careful and prudent speed; assured, clear distance ahead · Michigan Legislature
- MCL 257.628, Modified speed limits; violation as civil infraction · Michigan Legislature
- MCL 257.6a, Civil infraction defined · Michigan Legislature
- MCL 257.602b, Holding or using a mobile electronic device while operating a motor vehicle · Michigan Legislature
- 2023 PA 41 (Enrolled House Bill 4250), effective June 30, 2023 · Michigan Legislature
- MCL 257.625, Operating while intoxicated or visibly impaired · Michigan Legislature
- MCL 436.1801, Sales to minors or visibly intoxicated persons; dram shop claims; notice and deadline · Michigan Legislature
- MCL 436.1109, Definitions ("minor") · Michigan Legislature
- MCL 257.649, Right of way at intersections, stop signs and yield signs · Michigan Legislature
- MCL 257.650, Right of way when turning left · Michigan Legislature
- MCL 257.652, Entering a highway from an alley, private road or driveway · Michigan Legislature
- MCL 257.643, Following distance · Michigan Legislature
- MCL 257.402, Rear-end collisions; prima facie evidence of negligence · Michigan Legislature
- MCL 500.3101, Required no-fault security · Michigan Legislature
- MCL 500.3102, Penalty for operating without required security · Michigan Legislature
- MCL 500.3105, PIP benefits payable without regard to fault · Michigan Legislature
- MCL 257.617, Duty to stop after a crash causing serious impairment or death; penalties · Michigan Legislature
- MCL 257.617a, Duty to stop after a crash causing injury; penalty · Michigan Legislature
- MCL 257.618, Duty to stop after a crash damaging a vehicle; penalty · Michigan Legislature
- MCL 257.619, Duties of a driver involved in a crash · Michigan Legislature
- MCL 257.731, Traffic convictions and civil infraction determinations inadmissible in civil actions · Michigan Legislature
- MCL 257.6b, "Civil infraction determination" defined · Michigan Legislature
- MCL 257.710e, Safety belt requirements; reduced recovery limited to 5% · Michigan Legislature
- MCL 600.2959, Comparative fault; reduced damages · Michigan Legislature
- MCL 500.3135, Tort liability for noneconomic loss; comparative fault in auto cases · Michigan Legislature
- MCL 500.3145, PIP notice of injury and limitations · Michigan Legislature
- MCL 600.5805, Period of limitations for injuries to persons or property · Michigan Legislature
- Accident not your fault? Here's how to deal with the other driver's insurance · Texas Department of Insurance
Updated September 29, 2026
This guide is general information, not legal advice, and laws change. For advice about your situation, talk to a lawyer licensed in your state. Reading this page or contacting us does not create an attorney-client relationship.
