What type of ladder features staypoles?

The type of ladder that features staypoles is known as the Bangor ladder. This design incorporates staypoles, which are adjustable supports that help stabilize the ladder when it is extended. Staypoles are particularly beneficial when using a longer ladder, as they provide additional support and prevent the ladder from tipping over by anchoring it firmly to the ground. The Bangor ladder is specifically designed for use in firefighting and rescue operations, where stability and reach are critical in emergency situations.

Other ladder types, such as extension ladders, folding ladders, and articulating ladders, have different structural designs and do not utilize staypoles. Extension ladders rely on a nested design to extend to various lengths but do not incorporate staypoles for support. Folding ladders are more compact and versatile but serve different purposes, while articulating ladders offer multiple configurations but still lack the staypole mechanism typical of a Bangor ladder. Thus, the unique feature of staypoles makes the Bangor ladder the correct choice in this context.