Sec. 16.003 of the Texas Civil Practice and Remedies Code gives you two years after a car accident to file a lawsuit against the party that injured you. The court will refuse to hear your case if you file a lawsuit after this deadline expires.
A car accident claim against a local or state government must follow the notice requirements of Sec. 101.101 of the Civil Practice and Remedies Code. This statute requires you to give the government or a government agency notice of your car accident claim within six months after the crash.