Do you think the fire hose will be effective on unruly Mexicans like it did during the civil rights era?
I believe you are asking about the Up-stop Wheel that is under the track. This effectively locks the wheels to the track. Most modern Roller Coasters have a wheel set made up of 3 parts. The Running Wheel(which run on top of the track), The Side-Friction Wheel, and the Bottom-Friction(or Up-stop) wheel. This configuration basically locks the coaster to the tracks. Most major coasters will have this configuration, especially if they have any major drops, loops, or turns. Some smaller coasters may lack either the Side or Bottom friction wheel.
You can try finding another job elsewhere. That will be your best bet. Your previous workplace will be unhappy if they are forced to hire you back because you are pregnant.
