Why is side-to-side surge a particular concern for tanker stability?

SIDE-TO-SIDE SURGE: While baffles reduce front-to-back surge, NO common baffle design reduces SIDE-TO-SIDE surge. DANGER: Side-to-side liquid movement shifts weight laterally; combined with the tanker's high center of gravity, this can push the vehicle toward rollover; especially dangerous during: lane changes, turns, curves, evasive maneuvers, and roundabouts; the surge can continue and amplify if the driver makes successive steering inputs; SCENARIO: A driver swerves to avoid an obstacle; the liquid surges to one side; as the driver corrects, the liquid surges back, potentially overpowering the correction and causing a rollover; DRIVER RESPONSE: Smooth, gradual steering; avoid sudden lane changes and quick maneuvers; slow down for curves and turns; anticipate and plan moves early; SMOOTH BORE tanks have the most side-to-side surge; even baffled tanks have full side-to-side surge; this is why tanker drivers must avoid abrupt maneuvers — a sudden swerve can initiate uncontrollable side surge and rollover; understanding that baffles don't help with lateral surge is key tanker knowledge.