A report finds 74% of vehicles driving into the Ultra Low Emission Zone comply with the new standards.Read more
Transport for London
We joined the mayor on his morning commute to ask him about how he feels he has done so far running London.
Transport for London says Katie Pennick's complaints will be investigated.
Some people are calling for London's transport bosses to encourage greater spatial awareness.
Campaigners want London Underground to display warning signs at stations with the loudest routes.
More than a quarter of Tube users surveyed by Transport for London (TfL) believe that they should only have to offer their seat to others if they are sitting in a "priority seat".
The questionnaire of 1,000 people also found that almost one in four feel awkward offering their seat on public transport.
The results have been released to mark the beginning of TfL's Priority Seating Week which will see the introduction of new designs for priority seats on the Jubilee Line.
Mark Evers, TfL's chief customer officer, said the week was "an opportunity to raise awareness of how we can make travelling easier, to remind us all that not all conditions are visible, and to offer our seat to those who may need it more."