REVOCABLE PROXY

              SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF THE
     BANK OF MECKLENBURG FOR THE SPECIAL MEETING OF SHAREHOLDERS TO BE HELD
                               SEPTEMBER __, 1997



The undersigned shareholder of Bank of Mecklenburg ("Mecklenburg") hereby
constitutes and appoints H. Perrin Anderson, John T. Roper and Allan W. Singer,
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 Mecklenburg held of record by the undersigned on ____________, 1997, at
the Special Meeting of Shareholders of Mecklenburg to be held on September __,
1997 at _____ p.m., local time, at _________________, _______________
Road,Charlotte, 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 Mecklenburg and Triangle
Bancorp, Inc. ("Triangle"), 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.       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 PROPOSAL 1. 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 MECKLENBURG 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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