What does the yellow triangle light on my car mean?

What does the triangle light on my car mean? In this video I had a problem with my Honda Ridgeline when I was driving to my house a light in the form of a yellow triangle with a sign in the middle and the check and the problem was that they only needed air to the 4 tires. I took it to the tire shop and they told me they had only 30psi of pressure and they have to carry 40psi minimum because the maximum for these tires is 51psi cold.

Видео What does the yellow triangle light on my car mean? канала Daniel Rescue Movers