Yay, first post, and it’s not even neuroscience. Still, since this is a male-dominated field, it could prove useful.
Through high-speed videos we show that significant splash back can occur when using a urinal, however, there are mitigation techniques. First, aim for a vertical surface rather than a horizontal one and keep away from the water bowl. Second, get close enough that the stream remains a stream rather than breaking up into droplets. Third, aim at an angle to the urinal either by aiming sideways or downward.