How noisy is M28 3BN?

DEFRA's 2022 noise model puts the loudest mapped source at M28 3BN in the 65.0–69.9 dB band. Mapped noise here: high road noise by day, high at night.

Is this a measurement of actual noise?

No. These figures come from DEFRA's Strategic Noise Mapping Round 4 (2022), a computer model of noise from major roads and railways. It estimates average levels over a year, not what you'd hear on any given day.

What noise sources are missing from this data?

The model only covers major roads, major railways and large urban areas. Neighbour noise, pubs and venues, building sites, aircraft and smaller local roads are not included.

Noise levels in M28 3BN

Mapped noise here: high road noise by day, high at night.

According to DEFRA's Strategic Noise Mapping (Round 4, 2022), the postcode M28 3BN has modelled road noise of 65.0–69.9 dB by day and 60.0–64.9 dB at night. These are modelled estimates of noise from major roads and railways, not measurements.

Mapped noise bands at M28 3BN

Source	Modelled level	What that means
Road (day, 07:00–23:00)	65.0–69.9 dB	Loud enough to intrude — think standing 10–20 metres from a busy main road. Conversation outdoors takes more effort; good glazing makes a real difference indoors.
Road (night, 23:00–07:00)	60.0–64.9 dB	Roughly constant busy-road hum — about the level of normal conversation. Clearly noticeable with windows open and audible through single glazing.
Rail (day, 07:00–23:00)	Below 55 dB or not mapped	This location is not covered by a mapped noise contour — the source is below the mapping threshold or not modelled here. That is not the same as quiet: smaller local roads, neighbours and other sources are not included.
Rail (night, 23:00–07:00)	Below 50 dB or not mapped	This location is not covered by a mapped noise contour — the source is below the mapping threshold or not modelled here. That is not the same as quiet: smaller local roads, neighbours and other sources are not included.

Source: DEFRA Strategic Noise Mapping Round 4 (2022), Open Government Licence. Modelled annual averages, not measurements.

Noise map around M28 3BN

55-59 dB60-64 dB65-69 dB70-74 dB75 dB+Unshaded = below the mapping threshold or not modelled (not necessarily quiet).

What do these decibel levels feel like?

30 dB

Whisper / quiet rural night

40 dB

Library

50 dB

Quiet office, light rainfall

60 dB

Normal conversation, busy-road hum ← this postcode

70 dB

Busy road at the kerb, vacuum cleaner

80 dB

Heavy lorry passing, alarm clock

Decibels are logarithmic: a 10 dB increase sounds roughly twice as loud.

What this data does — and doesn't — cover

Modelled, not measured.These are DEFRA's computer-modelled estimates (Round 4, 2022), not microphone readings at your door.
Major sources only. The model covers major roads, major railways and large urban areas. Smaller local roads, neighbours, pubs, building sites and aircraft are not included.
No mapped noise ≠ quiet. If a location shows no band, it means it falls outside the mapped contours — not that it is silent.
2022 snapshot.New roads, developments or traffic changes since 2022 won't show. The next DEFRA round is due around 2027.

More detail on the methodology page.

Bothered by road or rail noise at home?

Acoustic and secondary glazing typically cuts perceived traffic noise dramatically. We're building a free quote-matching service with vetted installers — leave your email and we'll contact you when it launches.

M28 3BN is in or near Walkden — see the road and rail noise map for Walkden.

Buying nearby? How to check noise levels before buying a house.

Frequently asked questions

How noisy is M28 3BN?: DEFRA's 2022 noise model puts the loudest mapped source at M28 3BN in the 65.0–69.9 dB band. Mapped noise here: high road noise by day, high at night.
Is this a measurement of actual noise?: No. These figures come from DEFRA's Strategic Noise Mapping Round 4 (2022), a computer model of noise from major roads and railways. It estimates average levels over a year, not what you'd hear on any given day.
What noise sources are missing from this data?: The model only covers major roads, major railways and large urban areas. Neighbour noise, pubs and venues, building sites, aircraft and smaller local roads are not included.