9.1. Provide all required safety equipment and instruct personnel to observe all safety policies, rules, and requirements at all times. 9.2. Conduct driver license checks annually on vendor staff that drive to and from TxDOT work locations to verify compliance. 9.3. Provide an updated list of all vendor personnel or subcontractors at each job site and comply with all security measures required by TxDOT. 9.4. Make arrangements with the designated TxDOT representative prior to offloading tools and equipment at the job site. 9.5. Only park in locations assigned by the designated TxDOT representative. 9.6. Not use restrooms for washing tools and equipment. 9.7. Ensure all personnel are fluent in English with the ability to receive, give, and understand written and oral instructions. 9.8. Ensure personnel are not excessively loud. 9.9. Ensure personnel do not use personal multi-media devices while performing services for TxDOT unless furnished by the vendor to facilitate communication with TxDOT or the vendor. 9.10. Conduct background checks using statewide DPS, Texas, and out-of-state county equivalent verification of criminal and sex offender background checks on all vendor’s permanent and temporary personnel scheduled to work on TxDOT projects prior to beginning service start-up. Upon award, supporting documentation confirming the completion of these comprehensive background checks may be subject to review upon request by TxDOT or the TxDOT designee, or both, prior to beginning the service. Failure to produce the requested documentation may be cause for cancellation of the contract. Background checks must be within the last year of contract execution date and must be completed on any new employees throughout the life of the contract. The background checks must include, but not be limited to, the following: 9.10.1. Social Security number verification. 9.10.2. Statewide criminal and sex offender records for all Texas counties and out-of-state county equivalents based on the current and previous addresses of the applicant for the past seven years.