If you are highly dependent on your car for everyday use and you live in an area that also experiences severe winter, then you need to make sure that you change early from your summer tires to dedicated winter tires or that you choose to go for a winter approved All Weather tires.
It is not safe to drive with your car if the weather changes into extreme winter weather and you have the wrong tires for this weather on your car. It can be even dangerous to try to drive in these harsh conditions with other tires than dedicated winter tires. In these cases you should leave your car behind and consider using alternative transportation. So, if you are really dependent on your car, make sure you don’t end up in situations like this.