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General information under Michigan law, not a fitting. A certified child passenger safety technician can check the installation and fit for free; see free car seat checks.
The 5-step seat belt fit test
Before a child leaves the booster, sit them in the car without it and check all five:
- Back against the seat back.
- Knees bend at the edge of the seat.
- Lap belt sits low across the upper thighs, not the stomach.
- Shoulder belt crosses the middle of the chest and shoulder, not the neck.
- They can stay seated that way for the whole trip.
If any answer is no, keep the booster.
Questions people ask us
Does this follow Michigan law?
Yes. It applies MCL 257.710d as amended effective April 2, 2025. Other states set their own rules, so outside Michigan check your state’s law; the stages match what national safety agencies recommend.
Should I move my child up as soon as they reach the minimum age?
No. Michigan law itself recommends keeping a child in each seat for as long as they fit within its height and weight limits. Each step up gives a little less protection.
