Some aftermarket systems trigger brake lights the moment a retarder engages. Although well-intentioned, this often creates false brake alerts when the truck isn’t truly slowing down, leading to confusion and riskier reactions from trailing drivers.
The Problem with “Always-On” Retarder-Based Signaling
Not every retarder engagement results in real deceleration
Brake lights may activate even if vehicle speed is stable
Following drivers react based on incorrect assumptions
This inconsistency can lead to panic braking or unnecessary evasive maneuvers.
The Hidden Danger of False Positives
False brake signals:
Reduce driver trust
Increase risk of sudden braking
Can lead to chain reaction collisions
Compromise safety integrity
How JakeLight Solves It
Instead of reacting to switch flips, JakeLight analyzes:
Retarder status
Real-time vehicle deceleration
CAN bus data (J1939)
Engine torque & transmission inputs
Why Precision Matters
Accurate brake signaling helps:
Improve driver reaction times
Maintain safe following distances
Reduce accidents and liability
Support higher CSA and fleet safety scores
Conclusion
Not all brake activations improve safety. Only calibrated, data-driven deceleration signals do.