AI News | Tech | Human Impact on Instagram: "Some road designs whisper, others warn… But this one? It punishes you instantly. In this clip, Iran’s one-way traffic spike system shows exactly why some countries take road discipline so seriously. These spikes aren’t random pieces of metal they’re a mechanical enforcement system built to stop drivers from going the wrong direction, whether by mistake or on purpose. Here’s how it works: When you’re moving in the correct lane, the metal teeth fold fla