Warning lights for brake, airbags and traction control come on at the same time.

Hello, sounds like this could be a result of low battery system voltage. There's no other concern that could bring together each of these warning lights, which do not relate to each other. Further, some kind of wiring concern could be present. Diagnostic testing must be performed when the problem is occurring to see what is happening at the time the lights illuminate. Additionally, troubleshooting will be needed. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops