Dhaka, May 15 -- Sector insiders and experts have called for a major government investment in the capital's road transport as the authorities' call to remove old buses from the roads has received little response from owners.

Several hundred old and unfit buses still ply the roads in Dhaka, raising passenger-safety concerns and causing severe air pollution.

Earlier, the environment ministry wrote to Bangladesh Road Transport Authority (BRTA) to remove buses and trucks older than 20 and 25 years, respectively, from the roads and make emission testing mandatory for issuing fitness certificates.

Later, Road Transport and Bridges Adviser Muhammad Fouzul Kabir Khan said the old public transports completing their economic life would not be al...