The front SRS airbags inflate in a moderate-to-severe frontal collision to help protect the head and chest of the driver and/or front passenger.
SRS (Supplemental Restraint System) indicates that the airbags are designed to supplement seat belts, not replace them. Seat belts are the occupant's primary restraint system.
Honda Civic Owners Manual. Auto Door Locking/Unlocking
Your vehicle locks and unlocks all doors automatically when a certain
condition is
met.
Auto Door Locking
Drive lock mode
All doors lock when the vehicle’s speed reaches about 10 mph (15 km/h).
Auto Door Unlocking
Driver’s door open mode
All doors unlock when the driver’s door is open ...