Whiz may tip or fall over if running on or too close to steps, angled floor, or uneven surfaces. Grooves between floors, grates or other lids, escalators, elevators, moving walkways, braille blocks, and thick rugs should be avoided while mapping routes. If there is a risk of Whiz entering such an area along its route, please either set a physical barrier to block it, or ensure Whiz is supervised while it is running. If Whiz enters a vertical or horizontal transportation mechanism (e.g. escalator, moving walkway) there is a risk of it falling on, blocking, or falling down the space and damaging the structure, or unit itself.