Warning a vehicle occupant before an intense movement

A method for warning an occupant of an autonomous vehicle, comprising:

• receiving images of the occupant;
• estimating, based on the images, whether the occupant is engaged in a certain activity that involves handling an object that can harm the occupant in a case of a Sudden Decrease in Ride Smoothness (SDRS);
• receiving an indication indicative of whether an SDRS event is imminent;
• and
• responsive to both receiving an indication indicative of an imminent SDRS event and estimating that the occupant is engaged in the certain activity, commanding a user interface to provide a first warning to the occupant shortly before the SDRS event.

A non-transitory computer-readable medium for use in a computer to warn an occupant of an autonomous vehicle, the computer comprises a processor, and the non-transitory computer-readable medium comprising:

• program code for receiving images of the occupant;
• program code for estimating, based on the images, whether the occupant is engaged in a certain activity that involves handling an object that can harm the occupant in a case of a Sudden Decrease in Ride Smoothness (SDRS);
• program code for receiving, from an autonomous-driving control system, an indication indicative of whether an SDRS event is imminent;
• program code for commanding a user interface to provide a first warning to the occupant shortly before the SDRS event, responsive to both receiving an indication indicative of an imminent SDRS event and estimating that the occupant is engaged in the certain activity;
• and
• program code for commanding the user interface to provide a second warning to the occupant, or not commanding the user interface to warn the occupant, shortly before the SDRS event, responsive to receiving an indication indicative of an imminent SDRS event and not estimating that the occupant is engaged in the certain activity;
• wherein the second warning is less noticeable than the first warning.