3 ms·

Since the umbrella is so visible, they may see it from further away during one of their brief glances at the road.

• llukas 7y ago
  How do you know if you're seen when carrying umbrella? Eye contact is not enough (info you can find in pretty much any driving handbook).
  • nullc 7y ago
    You don't, but it's almost certain that you'd be safer with it than without.