4 ms·
You don't even have to be vision impaired to benefit from this. If you are walking along a narrow road or alleyway and a car approaches from behind, the noise w
by xtreme 9y ago
You don't even have to be vision impaired to benefit from this. If you are walking along a narrow road or alleyway and a car approaches from behind, the noise will alert you and you can move accordingly.
- rcthompson 9y agoIndeed, we can use an expansive definition of "vision-impaired" that includes people looking at their phones and people without 360-degree panoramic X-ray vision.