REVOCABLE PROXY

            SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF TRIANGLE
        BANCORP, INC. FOR THE SPECIAL MEETING OF SHAREHOLDERS TO BE HELD
                               SEPTEMBER __, 1997



The undersigned shareholder of Triangle Bancorp, Inc. ("Triangle") hereby
constitutes and appoints ______________, _________________ and _______________,
or any of them, as attorneys-in-fact and proxies, with full power of
substitution to represent and vote as directed below, all shares of the common
stock of Triangle held of record by the undersigned on ____________, 1997, at
the Special Meeting of Shareholders of Triangle to be held on September __, 1997
at _____ p.m., local time, at _________________, _______________,Raleigh, North
Carolina, and at any adjournments thereof (the "Special Meeting").

1. PROPOSAL TO APPROVE MERGER. Proposal to approve the Agreement and Plan or
Reorganization and Merger, dated as of April 25, 1997, and the related Plan of
Merger (collectively, the "Agreement"), by and between Triangle and Bank of
Mecklenburg ("Mecklenburg"), and to approve the transactions contemplated
therein, pursuant to which, among other matters, (i) at the effective time,
Mecklenburg will merge with a subsidiary of Triangle (the "Merger") and become
the wholly-owned subsidiary of Triangle, and (ii) each share of common stock of
Mecklenburg outstanding immediately prior to the Merger will be converted into
1.0 share of the common stock, no par value, of Triangle.

 [ ] FOR                [ ] AGAINST                      [ ] ABSTAIN

2.       PROPOSAL TO APPROVE  AMENDMENT TO THE BYLAWS.  To consider and vote on
a proposal to amend Article III,  Section 2 of Triangle's Bylaws to increase
the maximum number of directors from 26 to 28.

3.       OTHER  BUSINESS.  To vote the shares of Mecklenburg  common stock
represented by this appointment of proxy upon such other matters as may properly
come before the Special  Meeting and any  adjournments  thereof in accordance
with their best judgment.

PLEASE VOTE, SIGN AND DATE THIS APPOINTMENT OF PROXY ON THE REVERSE SIDE AND
PROMPTLY RETURN IT USING THE ENCLOSED ENVELOPE.






                           (continued from other side)

         THE SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY WILL BE VOTED AS
DIRECTED ABOVE. IN THE ABSENCE OF ANY DIRECTION, THE PROXIES WILL VOTE THE
SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY FOR PROPOSALS 1 AND 2. SHOULD
OTHER MATTERS PROPERLY COME BEFORE THE SPECIAL MEETING, THE PROXIES WILL BE
AUTHORIZED TO VOTE THE SHARES REPRESENTED BY THIS APPOINTMENT OF PROXY IN
ACCORDANCE WITH THEIR BEST JUDGMENT. THIS APPOINTMENT OF PROXY MAY BE REVOKED BY
THE HOLDER OF THE SHARES TO WHICH IT RELATES AT ANY TIME BEFORE IT IS EXERCISED
BY FILING WITH THE SECRETARY OF TRIANGLE A WRITTEN INSTRUMENT REVOKING IT OR A
DULY EXECUTED APPOINTMENT OF PROXY BEARING A LATER DATE OR BY ATTENDING THE
SPECIAL MEETING AND ANNOUNCING HIS OR HER INTENTION TO VOTE IN PERSON.


                                         By signing this proxy, the
                                undersigned hereby acknowledges
                                receipt of the Notice of Special
                                Meeting, dated _______, 1997, and
                                the accompanying Joint Proxy
                                Statement/Prospectus of Mecklenburg
                                and Triangle.


                                 Dated:  _______________________________, 1997



                                 ---------------------------------------------
                                 Signature of Owner of Shares



                                 ---------------------------------------------
                                 Signature of Joint Owner of Shares (if any)


                                          Instruction: Please sign
                                 above exactly as your name appears
                                 on this appointment of proxy. Joint
                                 owners of shares should both sign.
                                 Fiduciaries or other persons signing
                                 in a representative capacity should
                                 indicate the authorized capacity in
                                 which they are signing.

IMPORTANT: TO INSURE THAT A QUORUM IS PRESENT AT THE SPECIAL MEETING, PLEASE
SEND IN YOUR APPOINTMENT OF PROXY WHETHER OR NOT YOU PLAN TO ATTEND. EVEN IF YOU
SEND IN YOUR APPOINTMENT OF PROXY, YOU WILL BE ABLE TO VOTE IN PERSON AT THE
SPECIAL MEETING IF YOU SO DESIRE.


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