How do baffled tanks differ from smooth-bore tanks in how they handle surge?

Baffled liquid tanks have bulkheads with holes that let liquid flow through while dampening the front-to-back wave action, which reduces forward surge during braking. However, baffles do not stop side-to-side surge, so the driver must still be careful in turns and lane changes. Smooth-bore tanks have no baffles at all, so surge is strong in every direction; these are typically used for food products where baffles would be hard to clean. Knowing which type you are driving tells you how much surge to expect and how cautiously to brake and steer. Bulkheads (solid walls separating compartments) are a different feature used to separate cargo or balance weight.