That's the low tire pressure warning. Check your tire pressures, then fill them to the spec. you will find on the tag under the door latch on the inside of the drivers door opening.
If only one tire is low look for a puncture.
If you can't find the tire chart just fill them to 32lbs. which is a safe average pressure.
If you get any red warning lights, pull over and get some help so you don't blow up the motor or run out of electrical power.
Next time you have some time to kill, read the owners manual so you have a little mechanical knowledge.