Minister, you mentioned the level of nitrogen dioxide, and you'll be aware of the study being undertaken by Professor Paul Lewis at Swansea University in this regard—figures showing 81 out of 916 places exceeding safe limits, including eight in Carmarthenshire, and one example being the Felinfoel road in Llanelli. What evaluation are you and your officials making of moves like the 50 mph limits on certain trunk roads and parts of the M4 since they were introduced? Are we yet able to see what difference those are making?

What recent discussions have you had with local authorities to improve the monitoring of pollution levels, because you will be aware that there are communities that are concerned that they've got levels that they feel may be dangerous but the monitoring just isn't there. And have you given any further consideration to the need for a new clean air Act for Wales?