"Road undulations" refers to the small bumps, dips, or uneven surfaces on the road that can cause a vehicle to move up and down.
Full definition
The 200 is unexpectedly capable in the corners, though its ride is bouncy and feels underdamped over
large road undulations.
The astute setup reduces Avalon's posture fluctuations under hard or sudden directional changes, limits body movements, and yet absorbs
nasty road undulations for a comfortable, flat ride.
Ride quality is good but bad roads does make the suspension feel a bit uneasy and the setting is itself on the softer side which is great at low speeds but not so good at high speeds as there is quite a pitch and wallow
over road undulations.
It also comes with variable Frequency Selective Damping that adjusts itself automatically according to
the road undulations.
The Jeep Compass will have Frequency Selective Damping (FSD technology which provides variable damping that adjusts to
road undulations.
Like the new S - Class saloon, Mercedes S - Class coupe is able to recognize
the road undulations in advance with new Magic Body Control system.
There will also be an optional set of electromechanical anti-roll bars as an option to reduce body roll in hard cornering while still ironing out bumps and
road undulations.