Okla. Stat. tit. 69, § 69-4026: Required contract provisions

All contracts made by the Department of Transportation with the

contractor shall provide the following:

1. A requirement that the contractor obtain liability insurance

in an amount determined by the Department which shall jointly insure

the State of Oklahoma and the contractor against all liability for

claims for damages occurring wholly or in part because of the

contract;

2. Standards for the size, design, erection and maintenance of

service information signs and the advertising logos thereon, which

shall be in accordance with the National Manual on Uniform Traffic

Control Devices; and

3. A requirement that the Department of Transportation shall

receive not less than ten percent (10%) of the contract price

between the contractor and the advertiser.