More ill-conceived dictums......

Black smoke from diesels is unpleasant and the particulates from diesels are particularly dangerous, but essentially it is carbon........but FAR MORE DANGEROUS are the pollutants released UNSEEN from poorly tuned gasoline engines, which of they do nothing about.

As ever because they can see it they like to think they are doing something but they are too blind to do anything about the invisible elephant in the room

Absolutely correct, but missing some more practical advise:

1. Never clean an airfilter from a diesel engine - change it. Why: there are micro-particles that block the filtermaterial. Would you clean your oilfilter with gasohol instead to change it / same same but different. Some Thais do that to economize money. But it works out very very more expensive!

A not-clean filter change the relation between diesel-intake and air-intake. Proof: Accelerating the big smoke come out. Unburned fuel. Dangerous for babies

and kids. Those particles are cancerous and are heavier than air, accumulating near the ground.

Question of the day? How many good mecanics exist in Thailand? Answer of the day: Same percentage as lawyers: very very few. TIT.

2. Generally if the black smoke come out aswell under normal condition, it means you have to check the injectors.

All those filters or injectors to change is finally cheaper by lower fuel consumption! And has an effect on our envirement.

But MD's or Professors tell you to stop smoking for a long live. It's much more dangerous living in a traffic-dense town than smoking. Not smoking and living in the paradies would be the best for sure!

They should get old Inspector Cyril "Blakey from on the Buses on the job

No this is THE problem, they DO have ol' Blakey on the job.

Flew back into BKK yesterday and easy to see from the air the whole city was blanked by a haze of smoke from burning paddy and waste land.

Much worse pollution than the buses.

Easily preventable, why not put a stop to it ?

I have just returned to LOS from UK . They are having a problem with Sahara-sand . But that is nowhere near as bad as the smog on the border with Laos . An interesting programme on the BBC in UK about how the tiger is becoming nearly extinct in Burma . Apparently due to huge stretches of forestation being burnt . A really sad sign of the times we live in .

Bnagkok will loose its chariter then