Die Hands-On-Detection (HOD)-Funktion wird von der Vorschrift 79 der Vereinten Nationen (UN ECE R79 "Lenkanlagen") gefordert und gilt für alle Neufahrzeuge, die über ein Spurhalte-Assistenzsystem (Lane Keeping Assist System, LKAS) verfügen.
https://www-esv.nhtsa.dot.gov/Proceedings/25/25ESV-000202.pdf
A technical sensing solution and a defined “hands off” warning strategy have to be implemented. ...
Existing steering torque sensors were not considered to be robust enough as they do not provide reliable hands on/off information when the vehicle is at a standstill or is driving on straight, smooth roads, especially at low speeds. IEE developed a capacitive “Hands Off Detection” (HOD) sensor integrated into the steering wheel rim to overcome those concerns. ...
HOD also overcomes the known weaknesses of torque sensors that have limited performance on straight roads with few or no irregularities.