Complex sentence: Concerns have been expressed that Puffin crossings may be less safe than Pelican crossings due to causing confusion, however, a 2008 study commissioned by the DfT found that Puffins were safer than Pelican crossings with fewer pedestrian accidents and fewer involving cars, despite confusing pedestrians.
Split into simpler sentences: Concerns have been expressed that Puffin crossings may be less safe than Pelican crossings due to causing confusion. However, a 2008 study commissioned by the DfT found that Puffins were safer than Pelican crossings with fewer pedestrian accidents and fewer involving cars, despite confusing pedestrians.