KINETIC (Kingpin-based Intelligent Node for E-Trailer Torque and Interoperable Control)

The road freight sector is accelerating its transition towards electrification in order to reduce CO₂ emissions and increase energy efficiency. Electrified semitrailers equipped with electric axles (e-axles) can provide additional traction support and regenerative braking. However, reliable control of such systems requires accurate measurement of longitudinal forces and the articulation angle between tractor and trailer. At present, no mechanically robust and industrially viable method exists to directly measure these forces and angles at the coupling interface under real logistics operating conditions.
The kingpin — the forged steel coupling element between tractor and trailer — is the only universal mechanical connection in articulated freight transport. It continuously transfers longitudinal pulling and braking forces while operating in a harsh environment characterised by high cyclic loads, coupling impacts, frictional wear, dirt, moisture, and temperature variations. Integrating sensors into this safety-critical component without compromising structural integrity or fatigue life is a significant engineering challenge.
The KINETIC project (Kingpin-based Intelligent Node for E-Trailer Torque and Interoperable Control) develops a mechanically robust Smart Kingpin prototype with integrated force sensing. The project focuses explicitly on structural strength, fatigue resistance, sealing, sensor protection, and durability under realistic freight conditions. Building on insights from earlier heavy vehicle research within HAN, the project advances towards a full-scale, operationally validated prototype.
Beyond enabling torque control for electrified trailers, reliable force measurement at the kingpin may support overload detection, cargo safety monitoring, and predictive maintenance.
This one-year KIEM Logistiek project will deliver:
• A mechanically validated Smart Kingpin prototype • Experimental load data under realistic dynamic conditions • Design guidelines for durable sensor integration in safety-critical coupling components The results contribute directly to energy-efficient and reliable logistics systems.