Harrison Drive Colne, Pendle
142 addresses across 7 postcodes (BB8), about 630 m (0.4 miles) long, classed as a local road. USRN 29800949.
- Sales: 72 recorded sales since 1995; in 2025 the median was £127,000 across 1 sale.
- Energy: 103 homes have an energy certificate (A: 31, B: 9, C: 28, D: 29, E: 5, F: 1).
- Flood: 7 addresses on its postcodes are in areas at high or medium risk of flooding from rivers, the sea or surface water.
- Council tax: Most homes around it are in council tax band A; Band D in Pendle costs £2,640 a year in 2026-27.
- Broadband: Gigabit broadband is available to 100% of premises.
- Transport: The nearest railway station is Colne, about 680 m (0.4 miles) away in a straight line.
- Green space: The nearest park or garden, Alkincoats Park, is about 100 m away.
- Air: Background air pollution in 2024 was 7.3 µg/m³ of nitrogen dioxide and 6.0 of PM2.5, within UK legal limits.
- Height: Its addresses are 160 to 202 m above sea level.
- Noise: 59 of its 143 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is The Richmond Hill Practice, about 1.1 km (0.7 miles) away.
- People: About 1,300 people lived in the census areas around it in 2021; 65% of households owned their home and 25% of adults held a degree or other higher qualification.
- Crime: 38 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
Sales on this street
| Year | Sales | Median price | Lowest | Highest |
|---|---|---|---|---|
| 2025 | 1 | £127,000 | £127,000 | £127,000 |
| 2023 | 5 | £130,000 | £112,500 | £164,950 |
| 2022 | 2 | £115,000 | £115,000 | £115,000 |
| 2021 | 1 | £115,000 | £115,000 | £115,000 |
| 2020 | 2 | £110,000 | £110,000 | £110,000 |
| 2019 | 4 | £100,000 | £77,000 | £125,000 |
| 2018 | 2 | £88,000 | £85,000 | £91,000 |
| 2016 | 3 | £70,000 | £65,000 | £81,000 |
| 2014 | 2 | £69,000 | £66,000 | £72,000 |
| 2012 | 1 | £85,000 | £85,000 | £85,000 |
| 2011 | 3 | £89,000 | £50,000 | £89,995 |
| 2010 | 1 | £62,500 | £62,500 | £62,500 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 30 Jul 2025 | 49 BB8 9SJ | Terraced | £127,000 | |
| 16 Feb 2024 | 63 BB8 9SJ | Semi-detached | £115,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 15 Sep 2023 | 74 BB8 9SE | Terraced | £112,500 | |
| 16 Jun 2023 | 86 BB8 9SE | Terraced | £164,950 | |
| 14 Jun 2023 | 48 BB8 9SL | Terraced | £130,000 | |
| 7 Jun 2023 | 118 BB8 9SF | Terraced | £130,000 | |
| 10 Feb 2023 | 45 BB8 9SJ | Terraced | £115,000 | |
| 28 Oct 2022 | 96 BB8 9SE | Terraced | £115,000 | |
| 8 Apr 2022 | 39 BB8 9SJ | Terraced | £115,000 | |
| 17 Dec 2021 | 152 BB8 9SF | Terraced | £87,300 | Not a standard sale (repossession, buy-to-let or transfer). |
| 29 Sep 2021 | 81 BB8 9SJ | Terraced | £115,000 | |
| 18 Dec 2020 | 64 BB8 9SE | Terraced | £145,500 | Not a standard sale (repossession, buy-to-let or transfer). |
| 26 Jun 2020 | 57 BB8 9SJ | Terraced | £110,000 | |
| 7 Feb 2020 | 58 BB8 9SE | Terraced | £110,000 | |
| 25 Mar 2019 | 126 BB8 9SF | Terraced | £85,000 | |
| 18 Mar 2019 | 56 BB8 9SE | Terraced | £115,000 | |
| 4 Mar 2019 | 44 BB8 9SL | Terraced | £125,000 | |
| 15 Feb 2019 | 86 BB8 9SE | Terraced | £81,800 | Not a standard sale (repossession, buy-to-let or transfer). |
| 1 Feb 2019 | 77 BB8 9SJ | Terraced | £77,000 | |
| 27 Nov 2018 | 31 BB8 9SJ | Semi-detached | £91,000 | |
| 2 Nov 2018 | 42 BB8 9SL | Terraced | £85,000 | |
| 26 May 2017 | 48 BB8 9SL | Terraced | £71,567 | Not a standard sale (repossession, buy-to-let or transfer). |
| 9 Dec 2016 | 66 BB8 9SE | Terraced | £81,000 | |
| 15 Jul 2016 | 68 BB8 9SE | Terraced | £65,000 | |
| 18 May 2016 | 114 BB8 9SF | Semi-detached | £70,000 | |
| 24 Jun 2014 | 128 BB8 9SF | Terraced | £72,000 | |
| 28 May 2014 | 94 BB8 9SE | Terraced | £66,000 | |
| 23 Mar 2012 | 74 BB8 9SE | Terraced | £85,000 | |
| 11 Nov 2011 | 130 BB8 9SF | Terraced | £89,000 | |
| 24 Oct 2011 | 58 BB8 9SE | Terraced | £89,995 | |
| 7 Oct 2011 | 124 BB8 9SF | Terraced | £50,000 | |
| 15 Oct 2010 | 74 BB8 9SE | Terraced | £62,500 | |
| 14 Aug 2009 | 88 BB8 9SE | Terraced | £76,500 | |
| 3 Apr 2009 | 89 BB8 9SJ | Terraced | £90,000 | |
| 18 Apr 2008 | 63 BB8 9SJ | Semi-detached | £82,000 | |
| 6 Mar 2008 | 75 BB8 9SJ | Terraced | £75,000 | |
| 27 Sep 2007 | 31 BB8 9SJ | Semi-detached | £109,950 | |
| 23 Aug 2007 | 49 BB8 9SJ | Terraced | £90,000 | |
| 24 Jul 2007 | 48 BB8 9SL | Terraced | £100,000 | |
| 28 Feb 2007 | 112 BB8 9SF | Terraced | £95,200 | |
| 22 Feb 2007 | 152 BB8 9SF | Terraced | £81,250 | |
| 31 Oct 2006 | 48 BB8 9SL | Terraced | £74,000 | |
| 7 Aug 2006 | 85 BB8 9SJ | Terraced | £100,000 | |
| 3 Jul 2006 | 100 BB8 9SE | Terraced | £84,995 | |
| 3 Apr 2006 | 92 BB8 9SE | Terraced | £88,500 | |
| 21 Dec 2005 | 98 BB8 9SE | Terraced | £81,500 | |
| 27 May 2005 | 45 BB8 9SJ | Terraced | £73,000 | |
| 31 Mar 2005 | 89 BB8 9SJ | Terraced | £89,950 | |
| 1 Jan 2005 | 92 BB8 9SE | Terraced | £52,000 | |
| 21 Jun 2004 | 118 BB8 9SF | Terraced | £28,350 |
Energy performance certificates
103 homes with a current certificate; median floor area 73 m². Most common: House, mid-terrace (39); House, end-terrace (34); House, semi-detached (27). Built: 2020 (36); 1930-1949 (30); 1950-1966 (18). Tenure at assessment: owner-occupied (55); rented (social) (21); rented (private) (10).
Each home's certificates and sales (38 addresses)
- 27, Harrison Drive
- 31, Harrison Drive
- 35, Harrison Drive
- 42, Harrison Drive
- 44, Harrison Drive
- 45, Harrison Drive
- 48, Harrison Drive
- 50, Harrison Drive
- 53, Harrison Drive
- 56, Harrison Drive
- 57, Harrison Drive
- 58, Harrison Drive
- 59, Harrison Drive
- 61, Harrison Drive
- 63, Harrison Drive
- 68, Harrison Drive
- 70, Harrison Drive
- 72, Harrison Drive
- 76, Harrison Drive
- 77, Harrison Drive
- 82, Harrison Drive
- 84, Harrison Drive
- 86, Harrison Drive
- 88, Harrison Drive
- 89 Harrison Drive
- 90, Harrison Drive
- 94, Harrison Drive
- 95, Harrison Drive
- 99, Harrison Drive
- 104, Harrison Drive
- 114, Harrison Drive
- 126, Harrison Drive
- 128, Harrison Drive
- 130, Harrison Drive
- 132, Harrison Drive
- 144, Harrison Drive
- 150, Harrison Drive
- Rowan House, Harrison Drive
Council tax
What each band costs in Pendle in 2026-27: Band D £2,640 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,760 | £2,053 | £2,347 | £2,640 | £3,227 | £3,814 | £4,400 | £5,280 |
Homes by band in the neighbourhoods around this street: most are in band A (67% of about 2,040 homes).
Planning and heritage
- Conservation area: no postcode centre in this street's postcodes is in one.
- Listed buildings on or by this street: none.
- Article 4 direction (removing permitted development rights): none recorded, though not every council has published theirs.
- Tree preservation orders: none recorded, though not every council has published theirs.
- Green belt: no.
Brownfield land registered for housing within 1 km (0.6 miles)
- Linden Business Centre, Linden Road: up to 20 homes, permissioned (540 m (0.3 miles))
- Linden Business Centre, Linden Road: up to 20 homes, permissioned (540 m (0.3 miles))
- 58-60 Brown Street West, Colne: up to 2 homes, permissioned (560 m (0.3 miles))
- Land at Bright Street, Colne: up to 12 homes, not permissioned (570 m (0.4 miles))
- Walk Mill, Green Road / Spring Gardens Road, Colne: up to 120 homes, not permissioned (880 m (0.5 miles))
- Langroyd Hall, Colne: up to 32 homes, permissioned (910 m (0.6 miles))
- Langroyd Hall, Colne: up to 32 homes, permissioned (910 m (0.6 miles))
- Green Works, Knotts Lane, Colne: up to 26 homes, not permissioned (920 m (0.6 miles))
Roadworks
Finished in the last three months
- 19 August 2026: VIRGIN MEDIA, Utility repair and maintenance works, some carriageway incursion, on the footway, verge (minor works)
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 5 addresses are in areas at high risk, 2 at medium risk and 8 at low risk. Each address counts once, at the higher of its rivers-and-sea and surface-water risk.
Rivers and the sea alone: no home is in an area at risk.
High: 3.3% (1 in 30) or more chance of flooding a year. Medium: 1% to 3.3%. Low: 0.1% to 1%. Very low: under 0.1%. The rivers and sea figures allow for flood defences. Counts cover whole postcodes, which can include other streets.
Flood zone for planning: no postcode centre on this street is in flood zone 2 or 3.
| Postcode | Planning zone | Addresses at high / medium / low risk | Groundwater |
|---|---|---|---|
| BB8 9SJ | not in 2 or 3 | 2 / 1 / 2 | unlikely |
| BB8 9SF | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| BB8 9FG | not in 2 or 3 | ||
| BB8 9SE | not in 2 or 3 | 3 / 1 / 5 | unlikely |
| BB8 9FH | not in 2 or 3 | ||
| BB8 9SL | not in 2 or 3 | 0 / 0 / 1 | unlikely |
| BB8 9DN | not in 2 or 3 | 0 / 0 / 0 | unlikely |
Height above sea level
The street's 143 addresses are between 160 m and 202 m above sea level (172 m on average); the ground rises about 43 m from the lowest to the highest.
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| BB8 9DN | 100% | 100% | 100% | 0% |
| BB8 9FG | 100% | 100% | 100% | 0% |
| BB8 9FH | 100% | 100% | 100% | 0% |
| BB8 9SE | 100% | 100% | 100% | 0% |
| BB8 9SF | 100% | 100% | 100% | 0% |
| BB8 9SJ | 100% | 100% | 100% | 0% |
| BB8 9SL | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Colne 82,000 journeys in 2024–25 | 680 m (0.4 miles) |
| Nelson 114,000 journeys in 2024–25 | 3.7 km (2.3 miles) | |
| Brierfield 37,000 journeys in 2024–25 | 5.6 km (3.5 miles) | |
| Bus stops | 8 stops within 400 m (0.2 miles), 35 within 800 m (0.5 miles); nearest Haverholt Close Alkincoats | 50 m |
| Bus or coach station | Bus Station Colne | 940 m (0.6 miles) |
| EV charging points | 2 within 1.6 km (1 mile); nearest Be.EV Charging Station | 610 m (0.4 miles) |
| Airport with scheduled flights | Leeds Bradford Airport LBA | 34.1 km (21 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | 1 practices within 1.6 km (1 mile); nearest The Richmond Hill Practice | 1.1 km (0.7 miles) |
| Pharmacies | 4 pharmacies within 1.6 km (1 mile); nearest Evercare Pharmacy | 650 m (0.4 miles) |
| NHS dentists | 4 practices within 1.6 km (1 mile); nearest Dental Surgery | 580 m (0.4 miles) |
| Hospital | Pendle Community Hospital | 3.5 km (2.2 miles) |
| Police station | Colne Police Station | 920 m (0.6 miles) |
| Cash machines | 2 machines within 800 m (0.5 miles); nearest Co Local | 540 m (0.3 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 2 within 800 m (0.5 miles); nearest Alkincoats Park 17 ha | 100 m |
| Play area | 2 within 800 m (0.5 miles); nearest Unnamed 600 m² | 230 m |
| Playing field | 1 within 800 m (0.5 miles); nearest Holt House Playing Fields 13 ha | 80 m |
| Allotments | 4 within 800 m (0.5 miles); nearest White Grove Allotment Site 650 m² | 310 m |
Within 800 m (0.5 miles): 2 parks and gardens, 17 hectares in all.
Landmarks
The nearest historic landmark is Church of St Bartholomew, a listed building (Grade I), 690 m (0.4 miles) south-east. 20 listed buildings are within 1 km (0.6 miles), 1 of them Grade I.
| Name | What it is | From the middle of the street |
|---|---|---|
| Church of St Bartholomew | Listed building, Grade I | 690 m (0.4 miles) south-east |
| Name | What it is | From the middle of the street |
|---|---|---|
| Dereks Orchard | Wood | 740 m (0.5 miles) north |
| Lake Burwain | Lake or reservoir | 1.3 km (0.8 miles) north |
| Foulridge Upper Reservoir | Lake or reservoir | 1.3 km (0.8 miles) north-east |
| Barrowford Reservoir | Lake or reservoir | 1.5 km (0.9 miles) west |
| Church Clough | Valley | 1.5 km (0.9 miles) south-east |
| Waller Hill | Hill | 1.7 km (1.1 miles) north |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 7.3 | 40 | 10 |
| Fine particles (PM2.5) | 6.0 | 20 | 5 |
| Particles (PM10) | 8.9 | 40 | 15 |
All three are within the UK legal limits; PM2.5 is above the WHO guideline, as in most towns and cities.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| 70 to 74 | 1 | 0 |
| 60 to 64 | 5 | 0 |
| 55 to 59 | 53 | 0 |
| Under 55 | 84 | 143 |
59 of the street's 143 addresses are modelled at 55 dB or more from road traffic, above the WHO guidelines.
Climate, daylight and earthquakes
Monthly temperatures and rainfall, sunrise and sunset through the year, and earthquakes recorded nearby since 1970 are much the same across the area, so they are worked out once for Pendle: see them on the Pendle page.
Nearest schools
| School | Phase | Ages | Distance | Inspection |
|---|---|---|---|---|
| Colne Lord Street School | Primary | 3–11 | 430 m (0.3 miles) | Good (Jan 2023, overall grade under the previous framework) |
| Sacred Heart Roman Catholic Primary School, a Voluntary Academy | Primary | 5–11 | 750 m (0.5 miles) | No published inspection |
| West Street Community Primary School | Primary | 3–11 | 950 m (0.6 miles) | No overall grade (Apr 2025, graded inspection without an overall judgement): Quality of education: Requires improvement; Behaviour and attitudes: Good; Personal development: Good; Leadership and management: Requires improvement |
| Newtown Nursery School | Nursery | 0–4 | 1.2 km (0.7 miles) | No published inspection |
| Colne Primet Primary School | Primary | 4–11 | 1.3 km (0.8 miles) | Good (Jun 2023, overall grade under the previous framework) |
| Park Primary School | Primary | 4–11 | 1.3 km (0.8 miles) | Report card (Jul 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Strong standard; Inclusion: Strong standard; Leadership and governance: Expected standard; Early years: Strong standard; Safeguarding standards: Met |
| Colne Primet Academy | Secondary | 11–16 | 1.4 km (0.9 miles) | Report card (Jun 2026): Curriculum and teaching: Needs attention; Achievement: Needs attention; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Safeguarding standards: Met |
| Foulridge Saint Michael and All Angels CofE Voluntary Aided Primary School Church of England | Primary | 4–11 | 1.5 km (0.9 miles) | Good (Apr 2024, overall grade under the previous framework) |
| Colne Park High School | Secondary | 11–16 | 1.6 km (1 mile) | Report card (Apr 2026): Curriculum and teaching: Needs attention; Achievement: Needs attention; Attendance and behaviour: Expected standard; Personal development and wellbeing: Expected standard; Inclusion: Expected standard; Leadership and governance: Needs attention; Safeguarding standards: Met |
| Ss John Fisher and Thomas More Roman Catholic High School | Secondary | 11–16 | 1.7 km (1.1 miles) | Report card (May 2026): Curriculum and teaching: Expected standard; Achievement: Expected standard; Attendance and behaviour: Expected standard; Personal development and wellbeing: Strong standard; Inclusion: Expected standard; Leadership and governance: Expected standard; Safeguarding standards: Met |
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| Colne & Nelson Rugby Club BB8 9SF | Restaurant/Cafe/Canteen | 250 m | 5 Very good | 10 Jul 2026 |
| Peel Gardens Nursing Home BB8 9PR | Hospitals/Childcare/Caring Premises | 260 m | 4 Good | 26 Mar 2026 |
| Bannisters Restaurant BB8 9NW | Restaurant/Cafe/Canteen | 350 m | 5 Very good | 3 Dec 2025 |
| Banny's Fish And Chip Restaurant BB8 9NW | Restaurant/Cafe/Canteen | 350 m | 5 Very good | 7 Jan 2025 |
| BB's Coffee Shop BB8 9NW | Restaurant/Cafe/Canteen | 350 m | 5 Very good | 7 Aug 2025 |
| Ricardo's (Ice Cream Stand) BB8 9NW | Retailers - other | 350 m | 5 Very good | 20 May 2024 |
| Headline News BB8 9AQ | Retailers - other | 370 m | 1 Major improvement necessary | 15 Dec 2025 |
| North Valley Chippy BB8 9AQ | Takeaway/sandwich shop | 370 m | 5 Very good | 23 Jul 2026 |
| The Cake Side BB8 9AQ | Retailers - other | 370 m | 5 Very good | 3 Oct 2025 |
| 3 Kings BB8 9AQ | Takeaway/sandwich shop | 370 m | 4 Good | 13 Mar 2026 |
| The Toddle In Nursery Ltd BB8 9AG | Hospitals/Childcare/Caring Premises | 370 m | 4 Good | 24 Jun 2026 |
| Sainsbury's BB8 9AG | Retailers - other | 370 m | 5 Very good | 3 Nov 2025 |
| McDonalds BB8 9AG | Takeaway/sandwich shop | 370 m | 5 Very good | 17 Apr 2025 |
| Spudzys BB8 9RP | Mobile caterer | 390 m | 5 Very good | 21 Aug 2025 |
| Ruskin Stores BB8 9RP | Retailers - other | 420 m (0.3 miles) | 5 Very good | 30 Apr 2026 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 15 |
| Public order | 9 |
| Anti-social behaviour | 4 |
| Criminal damage and arson | 3 |
| Other theft | 2 |
| Vehicle crime | 2 |
| Drugs | 1 |
| Other crime | 1 |
| Possession of weapons | 1 |
Most of these are attached to: On or near Harrison Drive (32); On or near Park Way (3); On or near Rimington Avenue (1); On or near Alkincoats View (1); On or near Haverholt Close (1).
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 41 | 40 |
| Children under 15 | 21% | 17% |
| Aged 65 and over | 21% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 65% | 61% |
| Owned outright | 30% | 33% |
| Shared ownership | under 1% | 1% |
| Social rented | 24% | 17% |
| Private rented | 11% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 57% | 57% |
| Unemployment (of those working or looking for work) | 4% | 6% |
| Retired (of adults) | 25% | 22% |
| Long-term sick or disabled (of adults) | 6% | 4% |
| Work mainly from home (of those in work) | 19% | 32% |
| Travel to work by car or van | 66% | 48% |
| By train, Underground, metro or tram | under 1% | 4% |
| By any public transport, including bus | 3% | 8% |
| On foot or by bicycle | 10% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 72% | 65% |
| Work 30 km (19 miles) or more away | 3% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 25% | 34% |
| No qualifications | 25% | 18% |
| Apprenticeship as highest qualification | 6% | 5% |
| Main language English (aged 3 and over) | 96% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The 3 neighbourhoods around this street are in deciles 2 to 7 of 10 on the English Indices of Deprivation 2025, where 1 is the most deprived tenth of England's 33,755 neighbourhoods and 10 the least.
What has changed
Nothing new since the change feed started on 30 October 2026. New sales and energy certificates, and hygiene ratings, school inspections and flood figures nearby, will be listed here as the sources update.
Postcodes on this street
- BB8 9SJ: 42 addresses of 43 in the postcode
- BB8 9SF: 29 addresses of 35 in the postcode
- BB8 9FG: 28 addresses of 56 in the postcode
- BB8 9SE: 28 addresses of 29 in the postcode
- BB8 9FH: 9 addresses of 23 in the postcode
- BB8 9SL: 4 addresses
- BB8 9DN: 2 addresses of 15 in the postcode
Nearby streets
Haverholt Close · Alkincoats View · Jim Smart Way · Haverholt Close · Birtwistle Avenue · Haverholt Road · Dale Street · Barcroft Street · Alkincoats Villas · Tennyson Road · Moore Street · Wilmore Close
What this page cannot tell you
- Whether a particular house is at risk of flooding, subsiding or anything else: the flood map is a model of areas and there is no property-level data here.
- What a home is worth now: sales are historic prices for the homes that happened to sell.
- How safe the street is: crime points are moved to anonymised locations and many crimes are never reported.
- Whether you would get a place at a school: distances are straight lines, not catchments.
- Who lives on the street now: census figures describe the small areas around it in March 2021, during a lockdown.
- How long a journey takes or how often anything runs: transport distances are straight lines to the nearest stops.
- Whether a GP practice is taking new patients, or a dentist new NHS patients.
- How loud a home is inside, or noise from industry, neighbours or smaller airfields: noise figures are models of road, rail and air traffic outside.
How each figure on this page is matched to the street and worked out: methodology.