Выражение встречается в следующем контексте:

From the safety perspective, there are some very big intersections that do not have pedestrian crossing signals or places of refuge for pedestrians attempting to cross. Whilst emphasis can be placed on the, nothing should be left to chance and pedestrian safety should always come first as they are the most vulnerable in the event of any traffic accident between motor vehicles and pedestrians.

Заранее спасибоFrom