Applilcability of tds - transport business

Dear All Expert

There is an assessee (Pvt. Ltd. Co.) who is engaged in the business of transportation of goods. Some time he takes the services of other transporters (some are individuals & some are companies which is also engaged in the business of transportation) for the delivery of goods for his clients. All of them had provided the PAN No. to the assessee.

Now my question is, Is the assessee (Pvt. Ltd.) is liable to deduct TDS on transporation services received by him ?

THANKS IN ADVANCE