The world of automated warehouse vehicles can be confusing. Just consider the various types of available guidance systems: wire-guidance, magnetic tape and magnetic paint, laser-guidance, inertial navigation, and camera based imaging (i.e. vision-guidance). When you factor in the type of vehicle, e.g. tugger, unit load, custom, etc., the task of selecting a specific platform can be overwhelming.
Read: Navigating the World of Automated Warehouse Vehicles