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 ExtenderPropeller Shaft Runout Measurement Driveshafts Propeller Shaft Assembly
Special ToolsGE-7872Magnetic Base Dial Indicator Set, or equivalentGE-8001Dial Indicator Set, or equivalentFor equivalent regional tools, refer toSpecial Tools and Equipment.Note:This measurement procedure is intended to measure propellershaft runout for prop shaft systems with2-or-3 U-joints only. ...