Today I was asked by my kid,
"When are those yellow things with circle that makes thud thud thud sound"
Raised truncated domes on the ground at intersection, bus stops
I didn't and I didn't have words to explain it to google. I had hard time to query it 😀.
Than I thought of circle to search it, and that's what I got.
Detectable Warning Surfaces
They are called "Detectable Warning Surfaces"
