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Cooperative Adaptive Cruise Control: Platoon String Stability

Drive a six-car robotic platoon behind a lead vehicle and compare radar-only Adaptive Cruise Control against V2V-connected Cooperative ACC: watch a brake-pulse disturbance amplify into a collision risk under ACC, or damp to nothing under CACC.

Autonomous Systems3DAdvanced60 FPS

Six autonomous vehicles follow a human-piloted leader down a highway, each running the same constant-time-gap control law but reacting to the world through different channels. Switch between radar-only Adaptive Cruise Control (ACC), where every vehicle can only sense the car directly ahead through its own delayed sensors, and V2V-connected Cooperative ACC (CACC), where the leader's braking command is broadcast instantly to the whole string. Trigger a brake pulse from the leader and watch whether the disturbance dies out by the sixth car or amplifies into a rear-end collision risk — the same string-stability problem that determines how tightly real autonomous truck platoons and adaptive-cruise traffic can safely space themselves.

⚙ Under the hood

Drive a six-vehicle robotic platoon behind a lead car and compare radar-only Adaptive Cruise Control against V2V-connected Cooperative ACC: a leader brake pulse amplifies into a rear-end collision risk under ACC, but damps to nothing once the leader's acceleration is broadcast to every follower.

autonomous drivingplatooningV2V communicationcontrol theorystring stabilityadaptive cruise control

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install