Speed Limiter Module
Prevents vehicles from exceeding a configured speed limit by cutting engine power.
How It Works
- Cuts engine power to zero when speed limit is reached
- Does not apply brakes - vehicle coasts down naturally
- Will not prevent downhill acceleration from gravity
- Works in both forward and reverse directions (uses absolute speed)
Configuration
| Property | Description |
|---|---|
Speed Limit |
Maximum allowed speed before the limiter cuts engine power. Set to 0 to disable. Typical values (km/h): Delivery vans: 90-110, Buses: 80-100, Construction vehicles: 40-60 |
Speed Units |
Unit for configuring the speed limit: ms (meters per second, Unity native), kmh (kilometers per hour), mph (miles per hour) |
Active |
Read-only status indicator showing whether the limiter is currently cutting power. Useful for UI indicators, visual effects, or audio cues |
Use Cases
- Speed-restricted vehicles (delivery trucks, buses, construction equipment)
- Racing regulations with speed caps by vehicle class
- Gameplay mechanics (school zones, restricted areas)
- AI vehicle behavior control
- Tutorial or difficulty progression systems
Comparison with Cruise Control
Use SpeedLimiterModule to enforce a maximum speed cap.
Use CruiseControlModule to maintain a target speed with automatic braking.