Frogmore Frogmore, St Albans
233 addresses across 19 postcodes (AL2), about 780 m (0.5 miles) long, classed as a a road. USRN 37306481.
- Sales: 74 recorded sales since 1995; in 2026 the median was £492,744 across 1 sale.
- Energy: 149 homes have an energy certificate (B: 44, C: 80, D: 14, E: 11).
- Flood: 22 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 C; Band D in St Albans costs £2,419 a year in 2026-27.
- Broadband: Gigabit broadband is available to 0% to 100% of premises.
- Transport: The nearest railway station is How Wood (Hertfordshire), about 670 m (0.4 miles) away in a straight line.
- Green space: The nearest park or garden is about 260 m away.
- Air: Background air pollution in 2024 was 10.6 µg/m³ of nitrogen dioxide and 7.5 of PM2.5, within UK legal limits.
- Height: Its addresses are 66 to 74 m above sea level.
- Noise: 113 of its 238 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Midway Surgery, about 2.1 km (1.3 miles) away.
- People: About 850 people lived in the census areas around it in 2021; 59% of households owned their home and 40% of adults held a degree or other higher qualification.
- Crime: 66 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 |
|---|---|---|---|---|
| 2026 | 1 | £492,744 | £492,744 | £492,744 |
| 2025 | 3 | £375,000 | £370,000 | £705,000 |
| 2024 | 1 | £425,000 | £425,000 | £425,000 |
| 2023 | 1 | £840,000 | £840,000 | £840,000 |
| 2022 | 2 | £387,500 | £380,000 | £395,000 |
| 2020 | 4 | £369,000 | £352,000 | £560,000 |
| 2019 | 5 | £454,000 | £280,000 | £580,000 |
| 2018 | 2 | £615,000 | £485,000 | £745,000 |
| 2017 | 1 | £490,000 | £490,000 | £490,000 |
| 2016 | 1 | £525,000 | £525,000 | £525,000 |
| 2015 | 8 | £421,500 | £280,000 | £767,500 |
| 2014 | 4 | £245,000 | £182,000 | £325,000 |
| Date | Address | Type | Price | Notes |
|---|---|---|---|---|
| 22 May 2026 | 25, PAGE PLACE AL2 2FB | Terraced | £492,744 | |
| 14 Nov 2025 | FLAT 1, 4A AL2 2LP | Flat or maisonette | £370,000 | Leasehold. |
| 6 Nov 2025 | FLAT 2, 4A AL2 2LP | Flat or maisonette | £375,000 | Leasehold. |
| 23 Jun 2025 | 1B AL2 2JS | Detached | £705,000 | |
| 9 Oct 2024 | 22, PAGE PLACE AL2 2FB | Terraced | £425,000 | |
| 1 Sep 2023 | MILLBROOK HOUSE, 1C AL2 2JS | Detached | £840,000 | |
| 6 Apr 2023 | 4 AL2 2LP | Detached | £340,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 17 Feb 2023 | 26, PAGE PLACE AL2 2FB | Terraced | £585,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 13 Jan 2023 | FLAT 1-3, LAMB HOUSE, 38 AL2 2LH | Detached | £700,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 22 Jul 2022 | 32 AL2 2LH | Terraced | £380,000 | |
| 8 Apr 2022 | 21, PAGE PLACE AL2 2FB | Terraced | £395,000 | |
| 1 Dec 2020 | 8 AL2 2LL | Semi-detached | £383,000 | |
| 27 May 2020 | 10 AL2 2LL | Semi-detached | £352,000 | |
| 1 May 2020 | 13, PAGE PLACE AL2 2FB | Detached | £560,000 | |
| 25 Mar 2020 | 23, PAGE PLACE AL2 2FB | Terraced | £355,000 | |
| 6 Nov 2019 | 1, PAGE PLACE AL2 2FB | Flat or maisonette | £295,000 | Leasehold. |
| 1 Nov 2019 | 24, PAGE PLACE AL2 2FB | Terraced | £454,000 | |
| 6 Sep 2019 | 14, PAGE PLACE AL2 2FB | Detached | £545,000 | |
| 1 Apr 2019 | 32 AL2 2LH | Terraced | £280,000 | |
| 5 Feb 2019 | 13, PAGE PLACE AL2 2FB | Detached | £580,000 | |
| 4 Jan 2019 | 4A AL2 2LP | Other | £840,000 | Not a standard sale (repossession, buy-to-let or transfer). |
| 27 Jul 2018 | 14 - 18 AL2 2LH | Detached | £485,000 | |
| 26 Jan 2018 | 1A AL2 2JS | Detached | £745,000 | |
| 27 Jan 2017 | 27, PAGE PLACE AL2 2FB | Terraced | £490,000 | |
| 25 Nov 2016 | 14, PAGE PLACE AL2 2FB | Detached | £525,000 | |
| 17 Dec 2015 | 5, PAGE PLACE AL2 2FB | Flat or maisonette | £296,000 | Leasehold. |
| 11 Dec 2015 | 14, PAGE PLACE AL2 2FB | Detached | £500,000 | |
| 17 Aug 2015 | 26, PAGE PLACE AL2 2FB | Terraced | £450,000 | |
| 10 Jun 2015 | SOUTH WING AL2 2LL | Semi-detached | £767,500 | |
| 8 May 2015 | 22, PAGE PLACE AL2 2FB | Terraced | £350,000 | |
| 6 May 2015 | 3, PAGE PLACE AL2 2FB | Flat or maisonette | £280,000 | Leasehold. |
| 30 Apr 2015 | 27, PAGE PLACE AL2 2FB | Terraced | £403,000 | |
| 26 Mar 2015 | 12, PAGE PLACE AL2 2FB | Semi-detached | £440,000 | |
| 26 Sep 2014 | 21, PAGE PLACE AL2 2FB | Terraced | £325,000 | |
| 31 Jul 2014 | 3, GARDEN COTTAGES AL2 2LL | Terraced | £305,000 | |
| 3 Feb 2014 | 34 AL2 2LH | Terraced | £182,000 | |
| 7 Jan 2014 | 6, PAGE PLACE AL2 2FB | Flat or maisonette | £185,000 | Leasehold. |
| 21 Dec 2012 | 3, PAGE PLACE AL2 2FB | Flat or maisonette | £245,000 | Leasehold. |
| 6 Feb 2012 | SOUTH WING AL2 2LL | Semi-detached | £750,000 | |
| 30 Jul 2010 | FROGMORE HOUSE AL2 2LL | Semi-detached | £670,000 | |
| 28 Sep 2009 | 14 PAGE PLACE AL2 2FB | Detached | £360,000 | New build. |
| 21 Aug 2009 | 11 PAGE PLACE AL2 2FB | Terraced | £325,000 | New build. |
| 26 Jun 2009 | 10 PAGE PLACE AL2 2FB | Semi-detached | £280,000 | New build. |
| 30 Apr 2009 | 2 PAGE PLACE AL2 2FB | Flat or maisonette | £175,000 | New build. Leasehold. |
| 24 Apr 2009 | 4 PAGE PLACE AL2 2FB | Flat or maisonette | £183,000 | New build. Leasehold. |
| 17 Apr 2009 | 1 PAGE PLACE AL2 2FB | Flat or maisonette | £181,000 | New build. Leasehold. |
| 16 Apr 2009 | 5 PAGE PLACE AL2 2FB | Flat or maisonette | £185,000 | New build. Leasehold. |
| 27 Mar 2009 | 12 PAGE PLACE AL2 2FB | Semi-detached | £325,000 | New build. |
| 27 Mar 2009 | 23 PAGE PLACE AL2 2FB | Terraced | £210,000 | |
| 5 Mar 2009 | 21 PAGE PLACE AL2 2FB | Terraced | £232,000 | New build. |
Energy performance certificates
149 homes with a current certificate; median floor area 68 m². Most common: Flat (76); House, end-terrace (23); House, mid-terrace (23). Built: 2007-2011 (63); 2007 onwards (12); before 1900 (11). Tenure at assessment: owner-occupied (48); rented (social) (39); rented (private) (22).
Council tax
What each band costs in St Albans in 2026-27: Band D £2,419 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,613 | £1,882 | £2,150 | £2,419 | £2,957 | £3,494 | £4,032 | £4,838 |
Homes by band in the neighbourhood around this street: most are in band C (25% of about 1,100 homes).
Planning and heritage
- Conservation area: yes, Park Street and Frogmore (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
- Listed buildings on or by this street: 7.
- Article 4 direction (removing permitted development rights): Former Radlett Airfield.
- Tree preservation orders: 21 protected trees on or by this street.
- Green belt: yes, St Albans.
Listed buildings
- 90 AND 92, PARK STREET, grade II
- CHURCH OF THE HOLY TRINITY, grade II
- FROGMORE HOUSE, grade II
- GARDEN COTTAGE, grade II
- GARDEN WALL TO FROGMORE HOUSE, grade II
- LYCH GATE IMMEDIATELY SOUTH WEST OF CHURCH OF HOLY TRINITY, grade II
- THE WHITE HORSE PUBLIC HOUSE, grade II
Roadworks
Planned, as of 30 September 2026
- 5 October 2026 to 8 October 2026: INTEROUTE (FORMERLY I-21 HOLDINGS LTD), Statutory Infrastructure Works, multi-way signals, on the footway, carriageway, verge (standard works)
- 12 October 2026: VIRGIN MEDIA, Permanent reinstatement, two-way signals, on the footway (minor works, permit applied for)
- 13 October 2026 to 15 October 2026: AFFINITY WATER - C, Utility repair and maintenance works, multi-way signals, on the footway, carriageway (minor works)
Finished in the last three months
- 17 September 2026: HERTFORDSHIRE COUNTY COUNCIL, Highway repair and maintenance works, multi-way signals, on the carriageway (immediate - urgent works)
- 15 September 2026 to 17 September 2026: VIRGIN MEDIA, Utility asset works, two-way signals, on the footway (minor works)
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 6 addresses are in areas at high risk, 16 at medium risk and 47 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 |
|---|---|---|---|
| AL2 2FH | not in 2 or 3 | 2 / 1 / 6 | unlikely |
| AL2 2FB | not in 2 or 3 | 0 / 0 / 1 | unlikely |
| AL2 2LL | not in 2 or 3 | 0 / 0 / 15 | unlikely |
| AL2 2FD | not in 2 or 3 | 4 / 4 / 5 | unlikely |
| AL2 2DR | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2LH | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2FE | not in 2 or 3 | 0 / 3 / 3 | unlikely |
| AL2 2NJ | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2LP | not in 2 or 3 | 0 / 0 / 3 | unlikely |
| AL2 2FF | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2FG | not in 2 or 3 | 0 / 6 / 5 | unlikely |
| AL2 2JS | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2JU | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2NG | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2DD | not in 2 or 3 | 0 / 2 / 3 | unlikely |
| AL2 2NF | not in 2 or 3 | 0 / 0 / 4 | unlikely |
| AL2 2EW | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| AL2 2JX | not in 2 or 3 | 0 / 0 / 2 | unlikely |
| AL2 2LS | not in 2 or 3 | 0 / 0 / 0 | unlikely |
Height above sea level
The street's 238 addresses are between 66 m and 74 m above sea level (68 m on average); the ground rises about 8 m from the lowest to the highest.
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| AL2 2DD | 100% | 0% | 0% | 0% |
| AL2 2DR | 100% | 0% | 0% | 0% |
| AL2 2EW | 100% | 100% | 100% | 0% |
| AL2 2FB | 100% | 74% | 74% | 0% |
| AL2 2FD | 100% | 100% | 100% | 0% |
| AL2 2FE | 100% | 73% | 73% | 0% |
| AL2 2FF | 100% | 8% | 8% | 0% |
| AL2 2FG | 100% | 60% | 60% | 0% |
| AL2 2FH | 100% | 96% | 96% | 0% |
| AL2 2JS | 80% | 80% | 80% | 0% |
| AL2 2JU | 100% | 67% | 67% | 0% |
| AL2 2JX | 100% | 100% | 100% | 0% |
| AL2 2LH | 100% | 100% | 100% | 0% |
| AL2 2LL | 100% | 100% | 100% | 0% |
| AL2 2LP | 100% | 60% | 60% | 0% |
| AL2 2LS | 100% | 90% | 90% | 0% |
| AL2 2NF | 100% | 100% | 100% | 0% |
| AL2 2NG | 100% | 0% | 0% | 0% |
| AL2 2NJ | 100% | 0% | 0% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | How Wood (Hertfordshire) 29,000 journeys in 2024–25 | 670 m (0.4 miles) |
| Park Street 22,000 journeys in 2024–25 | 700 m (0.4 miles) | |
| Bricket Wood 27,000 journeys in 2024–25 | 2.3 km (1.4 miles) | |
| Bus stops | 7 stops within 400 m (0.2 miles), 12 within 800 m (0.5 miles); nearest Curo Park Frogmore | 60 m |
| Bus or coach station | Parkhouse Bus Station Hatfield | 8.2 km (5.1 miles) |
| Car parks | 1 within 800 m (0.5 miles); nearest Park Street Station Car Park | 710 m (0.4 miles) |
| EV charging points | Fastned Charging Station | 2.5 km (1.5 miles) |
| Airport with scheduled flights | London Luton Airport LTN | 17.4 km (11 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | Midway Surgery | 2.1 km (1.3 miles) |
| Pharmacies | 1 pharmacies within 1.6 km (1 mile); nearest How Wood Pharmacy | 1 km (0.6 miles) |
| NHS dentists | Family Dental Practice | 2.2 km (1.4 miles) |
| Hospital | Harperbury Hospital Social Services | 2.9 km (1.8 miles) |
| Police station | London Colney Police Station | 2.9 km (1.8 miles) |
| Cash machines | The Cooperative Food St Albans, Park Street Cashzone | 1 km (0.6 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 1 within 800 m (0.5 miles); nearest Unnamed 910 m² | 260 m |
| Play area | 1 within 800 m (0.5 miles); nearest Park Street Play Area 1,540 m² | 440 m (0.3 miles) |
| Playing field | 1 within 800 m (0.5 miles); nearest Unnamed 3.5 ha | 320 m |
| Allotments | 1 within 800 m (0.5 miles); nearest Burydell Lane Allotments 2.3 ha | 400 m (0.2 miles) |
Within 800 m (0.5 miles): 1 park or garden, 0.1 hectares in all.
Landmarks
The nearest historic landmark is Napsbury Hospital, a registered park or garden (Grade II), 1.6 km (1 mile) east. 20 listed buildings are within 1 km (0.6 miles).
| Name | What it is | From the middle of the street |
|---|---|---|
| Napsbury Hospital | Registered park or garden, Grade II | 1.6 km (1 mile) east |
| Name | What it is | From the middle of the street |
|---|---|---|
| School Pit | Lake or reservoir | 240 m west |
| Island Pit | Lake or reservoir | 390 m south |
| Pike Pit | Lake or reservoir | 440 m (0.3 miles) south-west |
| How Wood | Wood | 1.3 km (0.8 miles) west |
| St Julian's Hill | Hill | 1.9 km (1.2 miles) north-west |
| Chantry Island | Island | 2.4 km (1.5 miles) south |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 10.6 | 40 | 10 |
| Fine particles (PM2.5) | 7.5 | 20 | 5 |
| Particles (PM10) | 12.8 | 40 | 15 |
All three are within the UK legal limits; nitrogen dioxide and PM2.5 are above the WHO guideline, as in most towns and cities.
Road and rail noise
| Level | Road traffic | Railways |
|---|---|---|
| 70 to 74 | 13 | 0 |
| 65 to 69 | 64 | 0 |
| 60 to 64 | 14 | 0 |
| 55 to 59 | 22 | 0 |
| Under 55 | 125 | 238 |
113 of the street's 238 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 St Albans: see them on the St Albans page.
Nearest schools
| School | Phase | Ages | Distance | Inspection |
|---|---|---|---|---|
| Park Street Church of England Voluntary Aided Primary School | Primary | 3–11 | 370 m | Report card (May 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 |
| How Wood Primary and Nursery School | Primary | 3–11 | 670 m (0.4 miles) | Good (Mar 2023, overall grade under the previous framework) |
| Killigrew Primary and Nursery School | Primary | 3–11 | 1.8 km (1.1 miles) | No published inspection |
| Mandeville Primary School | Primary | 3–11 | 1.9 km (1.2 miles) | Report card (Feb 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: Expected standard; Safeguarding standards: Met |
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| Adam Nathan Catering AL2 2DR | Other catering premises | 40 m | 5 Very good | 27 Oct 2025 |
| Amy's Bakehouse AL2 2DR | Manufacturers/packers | 40 m | 5 Very good | 21 Oct 2025 |
| Communities 1st / Hertfordshire Social Supermarket AL2 2WH | Mobile caterer | 100 m | 5 Very good | 1 May 2025 |
| The Overdraught AL2 2JR | Pub/bar/nightclub | 270 m | 4 Good | 7 Jun 2025 |
| Twinsco Local AL2 2PH | Retailers - other | 340 m | 5 Very good | 17 Aug 2024 |
| The Falcon AL2 2PW | Pub/bar/nightclub | 370 m | 5 Very good | 7 Jun 2025 |
| Rumbles Fish Bar AL2 2PW | Takeaway/sandwich shop | 370 m | 4 Good | 12 Apr 2025 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 33 |
| Anti-social behaviour | 16 |
| Public order | 4 |
| Other theft | 4 |
| Burglary | 3 |
| Drugs | 3 |
| Vehicle crime | 2 |
| Criminal damage and arson | 1 |
Most of these are attached to: On or near Frogmore (21); On or near Parking Area (21); On or near Centaurus Square (8); On or near Curo Park (7); On or near Sycamore Drive (4).
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 37 | 40 |
| Children under 15 | 22% | 17% |
| Aged 65 and over | 16% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 59% | 61% |
| Owned outright | 31% | 33% |
| Shared ownership | under 1% | 1% |
| Social rented | 24% | 17% |
| Private rented | 16% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 63% | 57% |
| Unemployment (of those working or looking for work) | 4% | 6% |
| Retired (of adults) | 20% | 22% |
| Long-term sick or disabled (of adults) | 4% | 4% |
| Work mainly from home (of those in work) | 42% | 32% |
| Travel to work by car or van | 45% | 48% |
| By train, Underground, metro or tram | 5% | 4% |
| By any public transport, including bus | 7% | 8% |
| On foot or by bicycle | 5% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 55% | 65% |
| Work 30 km (19 miles) or more away | 4% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 40% | 34% |
| No qualifications | 16% | 18% |
| Apprenticeship as highest qualification | 5% | 5% |
| Main language English (aged 3 and over) | 94% | 91% |
| Cannot speak English well or at all | under 1% | 2% |
Deprivation
The neighbourhood around this street is in decile 4 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
- AL2 2FH: 43 addresses of 88 in the postcode
- AL2 2FB: 30 addresses
- AL2 2LL: 25 addresses of 27 in the postcode
- AL2 2FD: 22 addresses of 31 in the postcode
- AL2 2DR: 19 addresses
- AL2 2LH: 18 addresses of 19 in the postcode
- AL2 2FE: 15 addresses of 24 in the postcode
- AL2 2NJ: 14 addresses
- AL2 2LP: 12 addresses
- AL2 2FF: 10 addresses of 17 in the postcode
- AL2 2FG: 6 addresses of 17 in the postcode
- AL2 2JS: 5 addresses of 9 in the postcode
- AL2 2JU: 4 addresses of 5 in the postcode
- AL2 2NG: 3 addresses
- AL2 2DD: 2 addresses of 20 in the postcode
- AL2 2NF: 2 addresses of 32 in the postcode
- AL2 2EW: 1 address of 5 in the postcode
- AL2 2JX: 1 address of 52 in the postcode
- AL2 2LS: 1 address of 11 in the postcode
Nearby streets
Verside · Curo Park · Brinsmead · Branch Road · The Beeches · Moorlands · Sycamore Drive · Frogmore Home Park · Park Place · Minister Court · Mill View
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.