They are: 68 dB L Aeq 18h for daytime, which is defined as the 18 hours between 0600 and midnight 63 dB L Aeq 6h for night time, which is midnight to 0600.
Making the announcement today Roger Freeman, Minister for Public Transport, said: 'I expect developers of new railway lines to take all reasonably practical measures to reduce noise in the corridor along the line. However, in some locations this may not be possible and sound insulation will need to be provided for homes affected. 'The proposed regulations will ensure that sound insulation is provided for eligible homes where the noise exceeds one of these levels. In line with the practice on roads, the regulations will apply to new lines and additional tracks constructed alongside existing lines. I also propose a discretionary power to offer insulation or grant in the case of certain alterations to existing lines, again matching the practice for roads.'