 so long story short, i work at a local restaurant doing deliveries... they provided a company car that was super unsafe with brake and exhaust issues. Months went by before it was fixed, dating back to even before I worked there...

  
I literally could've been killed because the brakes failed to stop at an intersection, and I also had to go to a doctor appointment for the exhaust issues.

  
I eventually told ownership, and it got to the point where I threatened to contact OSHA... soon after that, the manager brings in these forms we all have to sign...it basically was like a contract saying that you cannot file any lawsuit or claim against the owners, the company etc as long as you work there. Not sure if that's legal.

  
It also said if anything is illegal, to dismiss it... and at the end right above the signature, it said you are giving up certain legal rights by signing this. 

  
is this something pretty standard, or something I should be worried about?

so, what legal rights are they talking about? sometimes i fear that they are like going to take advantage of me, that i like signed my life and liberties away beyond just not suing them.

.. i'm worried that they i signed my life and liberties away beyond just not suing them, like giving them unlawful liberties liek they can access my personal life, doctors appointments, etc everything