Risk mitigation measures should be proportionate with respect to exposure, the nature of the hazard and the potential consequences. In the Tour, it is not economic to put hay bales on every corner of every mountain descent. However, Vista Chinesa was a descent that would be passed four times over two days, and had been earmarked as a place where riders would be striving to push the limits. The problem here is that the deep gullies clearly serve a purpose in draining the road, so filling them in, even temporarily, would have still had to provide for discharging stormwater.