Conventional steering linkages usually use the​ ________ design.

The correct choice is the parallelogram-type design, which is prevalent in conventional steering linkages due to its ability to maintain proper steering geometry. In a parallelogram-type linkage, the configuration allows the tie rods and the steering arms to move in a way that keeps the wheel angles consistent relative to the chassis, ensuring that the wheels are always aligned properly as they turn. This design helps in reducing bump steer and improves overall handling performance by allowing smoother and more predictable steering input.

Parallelogram linkages consist of two pairs of parallel sides, which allows for equal movement of the left and right wheels as they are steered. This is essential in providing stability and effective steering feel when navigating various road conditions.

The other design types mentioned, such as triangle-type and cross-steer-type linkages, serve specific functions or are used in certain applications but do not have the widespread application and advantages presented by the parallelogram-type design in conventional vehicles. The Haltenberger-type, while a legitimate design concept, is less commonly referenced in modern steering systems compared to the established parallelogram arrangement. Understanding that the parallelogram configuration facilitates the maintenance of wheel alignment during steering movements is key to grasping why it is the standard in conventional steering linkage