Seat belt routing sensing systems and sensors and corresponding vehicle systems operating based on whether seat belts are properly worn

A method of operating a vehicle system based on whether a seat belt is properly worn, the method comprising:

• detecting, via a sensor, a parameter of a bracket, a strap or a seat belt buckle of a seat belt routing sensing system, wherein the parameter is a bending moment, a force, an angular position, or an angular movement of the bracket, first strap or seat belt buckle, wherein the bracket or strap is connected to a seat belt buckle;
• comparing the parameter to thresholds to determine if the parameter is within a predetermined range, wherein the predetermined range corresponds to the seat belt being worn properly;
• if the parameter is within the predetermined range, determining that the seat belt is properly worn and permitting certain vehicle operations;
• and
• if the parameter is outside the predetermined range, determining that the seat belt is improperly worn and generating at least one of (i) a warning signal, or (ii) preventing or limiting the certain vehicle operations.