Seat belts work for everyone, including pregnant women. Like all occupants, they are more likely to be seriously injured if they do not wear seat belts.

A pregnant woman should wear a lap-shoulder belt, and the lap portion should be worn as low as possible, below the rounding, throughout the pregnancy.
The best way to protect the fetus is to protect the mother. When a seat belt is worn properly, it is more likely that the fetus will not be hurt in a crash. For pregnant women, as for anyone, the key to making seat belts effective is wearing them properly.
Lap-Shoulder Belt
Seat Belt ExtenderIntake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation (LAF, LEA, or LUK) Valvetrain Valve Actuating Assembly Valve Tappets/Lifters
Exhaust Camshaft InstallationInstall the hydraulic lash adjusters into their bores in thecylinder head and lubricate. Refer toAdhesives, Fluids, Lubricants, and Sealers.Lubricate the valve tips. Refer toAdhesives, Fluids, Lubricants, and Sealers.Note:Used roller followers must be returned to the ori ...