Walkways do not necessarily need to follow the most direct path.
They should however take the route that minimizes the risks. Further steps are then required to control risks that remain. In fact providing pedestrian walkways may in some instances create a hazard as the pedestrian inadvertently feels they have right of way or that equipment will not veer onto the walkway. Further steps are required to render walkways safe.
In many situations pedestrians must share the aisle or passageway with plant equipment even though a designated walkway is laid out. Ideally pedestrian traffic should be totally segregated via a dedicated walkway or entry to the building from another point.
At a minimum pedestrians must be prevented from entering aisles where plant equipment is operating. An alternative route of 2 or 3 other aisles should be provided. This buffer zone is to prevent inadvertent dislodgement of materials from the rack possibly falling onto pedestrians and/or bystanders.
As mentioned earlier, wherever possible, pedestrian and plant equipment should be segregated by means of a barrier. Unfortunately if this was carried out on many walkways, forklifts would not be able to work in the aisles due to width. Further investigation is required in segregating pedestrians during site development or warehouse layout changes.