Euston Road A monitor at the junction of Euston Road and Judd Street, opposite the British Library, recorded an annual mean NO2 concentration of 52.4 microgrammes per cubic metre. Under the Air Quality Standards Regulations (2010), the annual average concentration must not exceed 40 microgrammes. The council said it was a TfL road, so it had “limited local control”, but it was trying to try to tackle pollution in the area. Tactics included improving “cycling connectivity”, asking HS2 construction workers to use “efficient” HGVs, and imposing planning restrictions on new developments. TfL said it had "significantly reduced" pollution in areas exceeding the legal limit since 2016, through tighter emissions standards and greener buses and taxis.