A transverse leaf spring is a type of semi-elliptical spring mounted sideways across the vehicle’s frame.
It is installed in an inverted position with a saddle fitted above the axle, forming a bow shape.
This spring is attached parallel to the wheel axle and supports the vehicle’s weight while allowing controlled movement.
Transverse springs are commonly seen in older suspension systems and in some modern cars for compact packaging.
Full elliptical, quarter elliptical, or semi-elliptical springs are mounted in different configurations and do not describe this sideways inverted setup.
Therefore, the correct answer is transverse.