I presume your photo is taken facing North, with the building at top left being the ZSL Main Building. That being the case, the mapped pelican crossing must be somewhere behind the hedge on the left. The near-horizontal sections of the dog leg represent parts of the two pavements visible in your photo, which are necessary to reach the pelican crossing. As such, the relative alignment of all the objects here look correct to me. Those pavements do exist and I suppose we could draw two pavements along the whole length of Outer Circle to make it clearer that they are pavements. But typically, we only draw pavements in where they serve a purpose. Here, the purpose they serve is to indicate to routers that it's possible to walk between the two sections of Broad Walk via the crossing. All seems correct to me, and if those sections were omitted, a router would have to plan a very longwinded route to find somewhere else to cross.