Lets assume you have a modern car, about 8 years old give or take. You always wear your seatbelt. You always drive with the windows up. You have frontal driver and passenger airbags but no side airbags.
Is it safer to drive around with the doors locked or unlocked. Lets also assume car jacking is not a consideration here.
On one hand, if the the doors stay closed (seems more likely if they are locked), seems to me that really helps the overall structural integrity if you have a rollover type of accident.
On the other hand, if your electrical system gets crapped out, and the doors are locked and windows dont work, a relatively minor accident could get ugly fast if fire or water were involved.
Then again, if the doors are unlocked, maybe you’ll get lucky and get “thrown clear” and all you’ll suffer are minor injuries