Traffic Flow

Every driver follows the Intelligent Driver Model and changes lane with MOBIL. Jams emerge from the rules, nothing is scripted.

Sim speed 4×

Live readouts

Avg speed–km/h

Throughput–veh/h

Stopped now–vehicles

Stop events–per minute

Vehicles–on road

Density–veh/km/lane

Traffic

Car density Speed limit Driver aggressiveness Reaction randomness Trucks Lanes

Traffic lights

Cycle length East–west green share

Green wave offset

Disturbance

Or click any car on the road. It brakes hard for six seconds, then the drivers behind sort out the mess.

What am I seeing?

IDM car-following (Treiber et al.) plus MOBIL lane changing (Kesting et al.), integrated at 10 Hz. Cars are drawn slightly larger than scale. Grid streets wrap around, so cars leaving one edge re-enter on the opposite side.