Why are tankers especially prone to rollovers?

TANKER ROLLOVER RISK: Tankers have a HIGH CENTER OF GRAVITY because the liquid load sits high in the tank; combined with liquid surge (especially side-to-side), this makes tankers much more prone to ROLLOVER than other vehicles. CONTRIBUTING FACTORS: High center of gravity; liquid movement shifting weight; partially filled tanks (more room for surge); SAFE DRIVING: Slow down for curves and ramps — take them well BELOW the posted advisory speed (the posted speed is for cars, not high-center-of-gravity tankers); avoid quick lane changes and sudden steering; brake before curves, not in them; smooth, gradual maneuvers; ROLLOVERS are a leading cause of tanker accidents and fatalities; even experienced drivers roll tankers by taking ramps and curves too fast; the combination of high center of gravity plus surge means the rollover threshold is much lower than a car or even a standard trailer; when in doubt, slow down — by the time you feel the tank shifting, it may be too late to prevent a rollover.