Experts from the mechanical engineering department of Bangladesh University Engineering and Technology on Tuesday gave recommendation for not extending the economic life of CNG-run auto rickshaws from 15 years to 21 years.
On the day, the expert team sent the recommendation to the Bangladesh Road Transport Authority.
By December 2017, the lifespan of 5,665 CNG-run autos expired in Dhaka city and about 2,800 similar autos in Chittagong city, according to the owners.
BRTA had requested the BUET expert team in late November to test the vehicles to find out if their lifespan could be extended or not following demands of the owners.
In December, the authority had extended the economic life span of CNG autos till March this year as the expert team was working in this regard.
The CNG autos were introduced in 2001 with five years’ economic life which was extended initially to nine years, then to 11 years and lastly to 15 years in 2013.
BUET mechanical engineering department professor Md Ehsan told New Age on Tuesday that they had sent their opinion after testing some autos that economic life of CNG autos should not be extended from present limit of 15 years.
The experts found 77 per cent of the tested CNG autos unfit for extension.
BRTA secretary Muhammad Showkat Ali said they have received the recommendations which were later sent to the Road Transport and Bridges ministry that would take the final decision.
At present, there are 15,696 CNG autos in Dhaka and 13,000 in Chittagong.
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