The conditions include limiting the use of loudspeakers in the rally area from Fakirapool Crossing to Nightingale Crossing and its duration to three-and-a-half hours.
The letter also specified that the rally stage should not be used for any purpose other than making political speeches, and acts that could go against the law and public interest would not be allowed.
The DMP also mandated that the rally stage could not be set up on the main road, people could throng the rally venue only two hours prior to its start and the rally must end by 5:30pm.
The conditions also include that people cannot gather in any open place before or after the time permitted for holding the rally, and traffic cannot be hampered and people's movement cannot be obstructed outside the area fixed for the rally.
The main opposition led 18-party opposition alliance is set to hold the rally at 2pm on Monday in front of the party's Naya Paltan headquarters.
The law-enforcers had specified similar conditions for opposition's Mar 12 rally at the same venue.