What must be remembered with regard to vehicles with canvass covers?

You answered correctly. Vehicles with canvass covers must be loaded and driven so that the covers do not block the driver’s view in the outside mirrors, ensuring safety and full visibility. Unloaded trailers with high canvass covers are more affected by side wind because the large surface area can act like a sail, making them unstable—drivers must be especially cautious in windy conditions. The statement about not needing to specially secure a load under a canvass cover is incorrect; loads must always be properly secured, regardless of the cover, to prevent them from shifting or falling. Remember these rules to ensure safe operation and compliance with traffic regulations.