First, make sure everyone involved is uninjured and in a safe location off the road.
Call the Authorities immediately if:
Anyone is injured
You are unable to safely move either vehicle out of traffic.
Take pictures of the accident from several angles.
Exchange with the other party:
Name, address, telephone number, and email address
Insurance information (company / policy number)
Vehicle information (year, make, model, license plate)
If your vehicle is not safe to drive, call a wrecker to take your car to the shop. Oklahoma is right to choose state so you can pick your own shop.
File a claim as quickly as possible. If the other party has low coverage, there may be prioritization of premium payouts.