The modular transportation system of the present invention comprise: 

• The wheels of the trolley are positioned on the rail so as to move the trolley in a linear direction.
• The trolley can be connected to a plurality of trolleys on either side of it to move all the trolleys connected to it.
• The said trolley comprises a prime mover operatively connected to the wheels of the trolley to self-propel the trolley in the forward or reverse direction, the said prime mover may be the prime mover may be a fossil fuel engine, or an electric motor
• The trolley is made of cast iron that travels on the rail with minimum friction, further Steel posts of L shaped construction are placed at  the projecting end supporting the rails.
• Under the trolley may be a  tray or a sling on which the load to be carried can be placed.
• The trolley fitted with the prime mover is the leading trolley or traction trolley to which other trolleys can be attached via a detachable link
• The traction trolley further has a reversing gear mechanism to make the trolleys move back and forth.