**Exhibit 31(b)**CERTIFICATIONI, Keith A. Istre, certify that:1. I have reviewed this combined annual report on Form 10-K of Lamar Advertising Companyand Lamar Media Corp.; 2. Based on my knowledge, this report does not contain any untrue statement of a materialfact or omit to state a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading with respect to the periodcovered by this report; 3. Based on my knowledge, the financial statements, and other financial informationincluded in this report, fairly present in all material respects the financial condition,results of operations and cash flows of the registrant as of, and for, the periods presentedin this report; 4. The registrants’ other certifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules13a-15(f) and 15d-15(f)) for the registrants and have: (a) Designed such disclosure controls and procedures, or caused such disclosurecontrols and procedures to be designed under our supervision, to ensure that materialinformation relating to the registrants, including their consolidated subsidiaries, ismade known to us by others within those entities, particularly during the period inwhich this report is being prepared;  (b) Designed such internal control over financial reporting, or caused suchinternal control over financial reporting to be designed under our supervision, toprovide reasonable assurance regarding the reliability of financial reporting and thepreparation of financial statements for external purposes in accordance with generallyaccepted accounting principles;  (c) Evaluated the effectiveness of the registrants’ disclosure controls andprocedures and presented in this report our conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by this reportbased on such evaluation; and  (d) Disclosed in this report any change in the registrants’ internal control overfinancial reporting that occurred during the registrants’ mostrecent fiscal quarter (the registrant’s fourth fiscal quarter inthe case of an annual report) that hasmaterially affected, or is reasonably likely to materially affect, the registrants’internal control over financial reporting; and5. The registrants’ other certifying officer and I have disclosed, based on our mostrecent evaluation of internal control over financial reporting, to the registrants’ auditorsand the audit committee of the registrants’ board of directors (or persons performing theequivalent functions): (a) All significant deficiencies and material weaknesses in the design or operationof internal control over financial reporting which are reasonably likely to adverselyaffect the registrants’ abilities to record, process, summarize and report financialinformation; and  (b) Any fraud, whether or not material, that involves management or other employeeswho have a significant role in the registrants’ internal control over financialreporting.Date:February 28, 2007/s/ Keith A. Istre