Few years ago, when I was working in Qatar, one of my friends was taking a driving test. The instructor was asking my friend to take the car and drive along the city network. They approached a roundabout and the instructor asked my friend to make u-turn. Instead of navigating through the roundabout, my friend took an immediate u-turn as if we do at the signals. Now you know what happened to his driving test result! Haha.
The most compelling aspect of the Safe System Approach is the acceptance of the fact that the humans are fallible and mistakes are inevitable. As planners and designers of the transportation system, this should be core of our work. We cannot assume that the pedestrians will talk through the nearest controlled crossing when the two attracting land uses are located just across the street.
Vision zero is possible if we plan the roadways for all road users!