Smart airbag suspension systems

A vehicle, comprising:

• a computing device;
• a chassis;
• an axle;
• a first airbag having a first top end coupled to the chassis and a first bottom end coupled to the axle;
• and
• a first time-of-flight (ToF) sensor configured to:
• periodically emit a first signal at the first top end or the first bottom end of the first airbag,
• detect a corresponding first reflection for each emitted first signal, and
• output, to the computing device, a first plurality of values representing a plurality of distances between the first top end and the first bottom end of the first airbag based on corresponding elapsed times between when each first signal was emitted and when the corresponding first reflection was detected,
• wherein the computing device is configured to determine a characteristic of the vehicle based at least in part on one or more values of the first plurality of values.

A suspension system for a vehicle, comprising:

• an airbag having a first end and a second end opposite the first end along a longitudinal axis of the airbag, wherein the first end comprises a transparent window;
• and
• a time-of-flight (ToF) sensor configured to:
• emit a signal through the transparent window into an internal cavity of the airbag at a first time,
• detect a reflection of the signal at a second time, and
• output a value representing a distance between the first end and the second end based on an elapsed time between the first time and the second time.