1 Exhibit 99.1 EXECUTION COPY AMENDMENT AMENDMENT, dated as of March 17, 1998 (this "Amendment"), to the Fifth Amended and Restated Credit Agreement, dated as of August 15, 1997 (as amended, supplemented or otherwise modified from time to time, the "Credit Agreement"), among OUTDOOR SYSTEMS, INC. (the "Company"), MEDIACOM, INC. (the "Canadian Borrower"; together with the Company, the "Borrowers"), the several banks and other financial institutions from time to time parties thereto (the "Lenders"), CANADIAN IMPERIAL BANK OF COMMERCE, as Canadian Administrative Agent, and CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENCY, as US Administrative Agent (in such capacity, the "US Administrative Agent"; together with the Canadian Administrative Agent, the "Agents"). W I T N E S S E T H: WHEREAS, the Borrowers, the Lenders and the Agents are parties to the Credit Agreement; WHEREAS, the Borrowers have requested that the Lenders agree to amend certain provisions of the Credit Agreement, and the Lenders are agreeable to such request upon the terms and subject to the conditions set forth herein; NOW, THEREFORE, in consideration of the premises and mutual agreements contained herein, and for other valuable consideration the receipt of which is hereby acknowledged, the Borrowers, the Lenders and the Agents hereby agree as follows: 1. Definitions. All terms defined in the Credit Agreement shall have such defined meanings when used herein unless otherwise defined herein. 2. Amendment of Subsection 9(j). Subsection 9(j) of the Credit Agreement is hereby amended by replacing it with the following new clause (j): "(j) (i) Except for the Designated Holders, any Person or "group" (within the meaning of Section 13(d) or 14(d) of the Securities Exchange Act of 1934, as amended) (A) shall have acquired beneficial ownership of 20% or more of any outstanding class of Capital Stock having ordinary voting power in the election of directors of the Company or (B) shall obtain the power (whether or not exercised) to elect a majority of the Company's directors, or (ii) the aggregate amount of Capital Stock having ordinary voting power in the election of directors of the Company held by the Designated Holders (on a fully diluted basis) shall not constitute at least 25% of the issued and outstanding Capital Stock having such voting power, or (iii) either of the Designated Holders shall own fewer than 60% of the number of shares of Capital Stock of the Company of any class held by them on the Closing Date (without giving effect to any stock split or distribution of additional shares in respect thereof), or (iv) a "Change of Control" (as 2 2 defined in the Senior Subordinated 1996 Indenture or the Senior Subordinated 1997 Indenture) shall have occurred, or (v) the Board of Directors of the Company shall not consist of a majority of Continuing Directors; as used in this paragraph "Continuing Directors" shall mean the directors of the Company on the Closing Date and each other director, if such other director's nomination for election to the Board of Directors of the Company is recommended by a majority of the then Continuing Directors; or" 3. Waiver. The Lenders hereby waive any Event of Default which may have occurred prior to the date hereof under Section 9(j) of the Credit Agreement as in effect before giving effect to this Amendment. 4. Conditions to Effectiveness. This Amendment shall become effective on and as of the date that the US Administrative Agent shall have received counterparts of this Amendment, duly executed and delivered by a duly authorized officer of each of the Borrowers, and the Majority Lenders and consented to by each Guarantor. 5. Limited Amendment. Except as expressly amended herein, the Credit Agreement shall continue to be, and shall remain, in full force and effect. This Amendment shall not be deemed to be a waiver of, or consent to, or a modification or amendment of, any other term or condition of the Credit Agreement (including, without limitation, the financial covenants set forth in subsection 8.1) or any other Loan Document or to prejudice any other right or rights which the Lenders may now have or may have in the future under or in connection with the Credit Agreement or any of the instruments or agreements referred to therein, as the same may be amended from time to time. 6. Counterparts. This Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, and all of said counterparts taken together shall be deemed to constitute one and the same instrument. 7. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK. 3 3 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be executed and delivered by their respective duly authorized officers as of the date first above written. OUTDOOR SYSTEMS, INC. By: /s/ ----------------------------------- Title: MEDIACOM, INC. By: /s/ ----------------------------------- Title: CANADIAN IMPERIAL BANK OF COMMERCE, as Canadian Administrative Agent and as a Lender By: /s/ ----------------------------------- Title: CIBC INC., as a Lender By: /s/ ----------------------------------- Title: CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK AGENCY, as US Administrative Agent and as a Lender By: /s/ ----------------------------------- Title: 4 ALLSTATE INSURANCE COMPANY By: /s/ ----------------------------------- Title: ALLSTATE LIFE INSURANCE COMPANY By: /s/ ----------------------------------- Title: ARCHIMEDES FUNDING, L.L.C. By: /s/ ----------------------------------- Title: BANK OF AMERICA NATIONAL TRUST & SAVINGS ASSOCIATION By: /s/ ----------------------------------- Title: BANK OF AMERICA CANADA By: /s/ ----------------------------------- Title: BANK OF HAWAII By: /s/ ----------------------------------- Title: THE BANK OF MONTREAL, CHICAGO BRANCH By: /s/ ----------------------------------- Title: 5 THE BANK OF NEW YORK By: /s/ ----------------------------------- Title: THE BANK OF NOVA SCOTIA By: /s/ ----------------------------------- Title: The BANK OF NOVA SCOTIA - CANADA By: /s/ ----------------------------------- Title: BANK ONE, ARIZONA, NA By: /s/ ----------------------------------- Title: BANKBOSTON, N.A. By: /s/ ----------------------------------- Title: BANQUE PARIBAS By: /s/ ----------------------------------- Title: By: /s/ ----------------------------------- Title: BAYERISCHE VEREINSBANK A.G. By: /s/ ----------------------------------- Title: 6 BEAR STEARNS INVESTMENT PRODUCTS, INC. By: /s/ ----------------------------------- Title: CAPTIVA FINANCE LTD. By: /s/ ----------------------------------- Title: CARILLON HOLDING, LTD. By: /s/ ----------------------------------- Title: CITY NATIONAL BANK By: /s/ ----------------------------------- Title: COMPAGNIE FINANCIERE DE CIC ET DE L'UNION EUROPEENNE By: /s/ ----------------------------------- Title: By: /s/ ----------------------------------- Title: CONTINENTAL ASSURANCE COMPANY By: /s/ ----------------------------------- Title: 7 CORESTATES BANK, N.A. By: /s/ ----------------------------------- Title: CREDIT LYONNAIS, LOS ANGELES BRANCH By: /s/ ----------------------------------- Title: CREDIT LYONNAIS CANADA By: /s/ ----------------------------------- Title: CREDITANSTALT CORPORATE FINANCE, INC. By: /s/ ----------------------------------- Title: DEEPROCK & COMPANY By: /s/ ----------------------------------- Title: DRESDNER BANK AG NEW YORK & GRAND CAYMAN BRANCHES By: /s/ ----------------------------------- Title: DRESDNER BANK CANADA By: /s/ ----------------------------------- Title: 8 FIRST HAWAIIAN BANK By: /s/ ----------------------------------- Title: FIRST NATIONAL BANK OF MARYLAND By: /s/ ----------------------------------- Title: FIRST UNION NATIONAL BANK (f/k/a FIRST UNION BANK OF NORTH CAROLINA By: /s/ ----------------------------------- Title: FLEET NATIONAL BANK By: /s/ ----------------------------------- Title: FLOATING RATE PORTFOLIO By: /s/ ----------------------------------- Title: THE FUJI BANK LIMITED, LOS ANGELES AGENCY By: /s/ ----------------------------------- Title: 9 GENERAL ELECTRIC CAPITAL CORPORATION By: /s/ ----------------------------------- Title: IMPERIAL BANK, A CALIFORNIA BANKING CORPORATION By: /s/ ----------------------------------- Title: INDOSUEZ CAPITAL FUNDING II, LIMITED BY: INDOSUEZ CAPITAL, AS PORTFOLIO ADVISOR By: /s/ ----------------------------------- Title: INDUSTRIAL BANK OF JAPAN, LTD., LOS ANGELES AGENCY By: /s/ ----------------------------------- Title: KZH-CRESCENT CORPORATION By: /s/ ----------------------------------- Title: KZH HOLDING CORPORATION III By: /s/ ----------------------------------- Title: 10 KZH-ING HOLDING CORPORATION By: /s/ ----------------------------------- Title: KZH-SOLEIL CORPORATION By: /s/ ----------------------------------- Title: LEHMAN COMMERCIAL PAPER INC. By: /s/ ----------------------------------- Title: THE LONG TERM CREDIT BANK OF JAPAN, LTD. By: /s/ ----------------------------------- Title: MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY By: /s/ ----------------------------------- Title: MELLON BANK, N.A. By: /s/ ----------------------------------- Title: 11 MERITA BANK LTD. - NEW YORK BRANCH By: /s/ ----------------------------------- Title: MERRILL LYNCH PRIME RATE PORTFOLIO BY: MERRILL LYNCH ASSET MANAGEMENT, L.P., AS INVESTMENT ADVISOR By: /s/ ----------------------------------- Title: MERRILL LYNCH SENIOR FLOATING RATE FUND, INC. By: /s/ ----------------------------------- Title: METROPOLITAN LIFE INSURANCE COMPANY By: /s/ ----------------------------------- Title: MICHIGAN NATIONAL BANK By: /s/ ----------------------------------- Title: THE MITSUBISHI TRUST AND BANKING CORPORATION, LOS ANGELES AGENCY By: /s/ ----------------------------------- Title: 12 NATIONAL CITY BANK By: /s/ ----------------------------------- Title: NORWEST BANK ARIZONA, N.A. By: /s/ ----------------------------------- Title: PARIBAS BANK OF CANADA By: /s/ ----------------------------------- Title: PARIBAS CAPITAL FUNDING L.L.C. By: /s/ ----------------------------------- Title: ROYALTON COMPANY By: /s/ ----------------------------------- Title: SENIOR DEBT PORTFOLIO By: /s/ ----------------------------------- Title: SOUTHERN PACIFIC BANK By: /s/ ----------------------------------- Title: 13 STRATA FUNDING LTD. By: /s/ ----------------------------------- Title: THE SUMITOMO BANK, LIMITED, NEW YORK BRANCH By: /s/ ----------------------------------- Title: THE SUMITOMO BANK OF CANADA By: /s/ ----------------------------------- Title: TCW LEVERAGED INCOME TRUST, L.P. By: /s/ ----------------------------------- Title: THE TRAVELERS INSURANCE COMPANY By: /s/ ----------------------------------- Title: UNION BANK OF CALIFORNIA NA By: /s/ ----------------------------------- Title: 14 VAN KAMPEN AMERICAN CAPITAL PRIME RATE INCOME TRUST By: /s/ ----------------------------------- Title: VAN KAMPEN CLO I, LIMITED By: /s/ ----------------------------------- Title: The undersigned hereby consent and agree to the foregoing amendment. OUTDOOR SYSTEMS PAINTING, INC. By: /s/ ----------------------------------- Title: OS ADVERTISING OF TEXAS PAINTING, INC. By: /s/ ----------------------------------- Title: OS BASELINE, INC. By: /s/ ----------------------------------- Title: DECADE COMMUNICATIONS GROUP, INC. By: /s/ ----------------------------------- Title: 15 BENCH ADVERTISING COMPANY OF COLORADO, INC. By: /s/ ----------------------------------- Title: NEW YORK SUBWAYS ADVERTISING CO., INC. By: /s/ ----------------------------------- Title: OUTDOOR SYSTEMS, INC. By: /s/ ----------------------------------- Title: OUTDOOR SYSTEMS (NEW YORK), INC. By: /s/ ----------------------------------- Title: OS BUS, INC. By: /s/ ----------------------------------- Title: NATIONAL ADVERTISING COMPANY By: /s/ ----------------------------------- Title: PACIFIC CONNECTION, INC. By: /s/ ----------------------------------- Title: