1. Strange Vibrations or Sounds
This could indicate an issue with your brakes, steering, tires, or suspension. Pull over, call I-86 Truck & Auto Repair at 716-665-2501 and one of our service professionals can guide you on next steps.
2. You Smell Something Burning
It may be something inconsequential or a major emergency, but you don't want to take the chance of causing pricey damage to your car or put your passengers in danger. Pull over and investigate.
3. To Search for Something
Your iPhone slides between the seat and the console and you think you can pull off an amazing contortionist move and keep driving. Don't count on your yoga/steering multitasking ability. Stop on the side of the road for two minutes and reclaim your phone.
4. Health Issue
Heart attacks and strokes can be preceded by fairly mild symptoms. If something seems amiss, pull over immediately and either call 911 or phone someone to pick you up.
5. Temperature or Oil Warning
Overheating or inadequate oil pressure is a clear and present danger to your engine. Protect your investment and pull your vehicle over.
6. You Lose Visibility
Whether it's weather-related or not, it is extremely hazardous to keep driving if you can't see the road. (This seems like a no-brainer, but some car owners think they can ride it out if they simply slow down.) Pull over slowly and carefully and either wait for a break in the fog/downpour/blizzard or remove the roadkill from your windshield.
7. You Are Dozing Off
Don't wrongly believe you can keep your eyeballs open by sheer force of will. Pull over, recline your seat, and take a catnap on the side of the road. Ah! Doesn't that feel better?
https://www.cartalk.com/content/top-10-signs-you-should-pull-over-immediately
https://lifehacker.com/know-when-you-shouldnt-drive-your-car-1642569323