Thought it was Ok, as folds says, does slightly assume barriers.
Can a barrier that doesn't stop you, still be a barrier, more of a snag?
When I was up at la rosiere in the French alps recently, there was a barrier closing the road to Italy along the col de petit St. Bernard. However, we cycled round it as there was a cars width of passing place at exactly where the barrier was. The walls of snow on either side of the road were more of a barrier. The threat of avalanche too. The 3500ft climb was not a barrier as the road is incredibly zigzagging