Court extends Delhi bus rule

The Supreme Court in India has given bus operators in Delhi another six months to replace diesel engine vehicles with a more environmentally-friendly alternative.

But the court said the latest extension will apply only to those operators who had placed orders for new engines which run on Compressed Natural Gas.

In a ruling two years ago, the court ordered that all buses would have to be running on gas engines by April the first.

From the newsroom of the BBC World Service