Grocery store conveyor belts

[mtbc]

Checking out at Tesco today I watched the conveyor belt jerking the groceries about. I was surprised and disappointed that the technology appears to remain so very primitive despite having had many decades to mature. Is it really beyond our wit to have developed a cheap way for the belt's motion to more smoothly start and stop? In the meantime I continue to lay my groceries such that they are likely to withstand the abrupt speed changes without toppling over and rolling away.