NEW DELHI: Tata motors and Delhi Transport Corporation on Friday signed a definitive agreement for the operation of 1,500 electric buses in the national capital, said a senior official of Tata motors. The DTC signed this agreement with its fully-owned subsidiary, TML CV Mobility Solutions Ltd. As part of the agreement, TML CV Mobility Solutions Ltd. will supply, operate and maintain 1,500 units of 12-metre low-floor air-conditioned electric buses for a period of 12 years.