Why can surge make a tank vehicle feel like it is still moving forward even after the driver has fully stopped braking at an intersection?

Pick an answer

1. It only happens with tanks carrying gas, never liquid
2. It only happens in tanks carrying refrigerated liquids
3. The liquid's forward momentum can push against the front of the tank, transferring a bit of force to the vehicle even at a stop
4. This sensation never actually occurs in a tank vehicle, regardless of how full the tank is or how hard the driver brakes, which is not how the system is actually designed to work in practice

Correct!

Not quite. The correct answer is highlighted.