Say you’re driving a truck on a narrow road also occupied by scooters. There’s a puddle up ahead. Do you:

A) Slow down before hitting the puddle so as to minimize splash to the other road occupants?

B) Swerve suddenly to the right, ignoring any scooters that might be beside you?

If you chose A, you’re not ready to drive a scooter in Viet Nam. On a positive note, nobody gets splashed.