I-75 north and south
I-94 (from Ann Arbor to Port Huron)
Entire length of I-696
I-275 north and south
M-10 Lodge Fwy
I-96 from Detroit West to M-14
Now, 5 mph above the limit can justify a ticket and every state trooper is supposed to pull a car over and write a ticket every 10 minutes. They have issued 30 brand new unmarked Crown Victoria cruisers and they are bringing all their part timers on full time.
Wear your seat belt, nothing hanging from the rear view mirror, do the speed limit (not a mile over) use cruise control if you have it, no cracks in your windshield, use your turn signals.