Chambers Lane Ickleford, North Hertfordshire
40 addresses across 5 postcodes (SG5), about 430 m (0.3 miles) long, classed as a local road. USRN 27925061.
- Prices and rents: A typical home in North Hertfordshire cost £422,835 in August 2026 (+3.1% on a year); private rents averaged £1,445 a month.
- Energy: 18 homes have an energy certificate (B: 1, C: 3, D: 5, E: 9).
- Flood: 3 addresses on its postcodes are in areas at high or medium risk of flooding from rivers, the sea or surface water.
- Recorded floods: No recorded flood covers the centre of any of its postcodes.
- Landfill: 4 historic landfill sites within 500 m (0.3 miles) of its postcodes; the nearest, Land off Cadwell lane, is 280 m away.
- Storm overflows: 2 storm overflows within 1 km (0.6 miles) spilled 16 times (26 hours) in 2025.
- Radon: Up to 1 to 3% of homes in the 1 km squares around it are estimated to be at or above the radon Action Level.
- Council tax: Most homes around it are in council tax band C; Band D in North Hertfordshire costs £2,449 a year in 2026-27.
- Broadband: Gigabit broadband is available to 67% to 100% of premises.
- Transport: The nearest railway station is Hitchin, about 2.4 km (1.5 miles) away in a straight line.
- Green space: The nearest park or garden, Upper Green, is about 120 m away.
- Air: Background air pollution in 2024 was 8.2 µg/m³ of nitrogen dioxide and 7.1 of PM2.5, within UK legal limits.
- Height: Its addresses are 51 to 53 m above sea level.
- Noise: 10 of its 40 addresses are modelled at 55 dB or more from road traffic.
- Doctors: The nearest GP surgery is Regal Chambers Surgery, about 2.2 km (1.4 miles) away.
- People: About 570 people lived in the census areas around it in 2021; 77% of households owned their home and 48% of adults held a degree or other higher qualification.
- Crime: 19 crimes were recorded within 250 m between September 2025 and August 2026, most often violence and sexual offences.
- Road safety: 2 collisions in which someone was hurt were reported on and around it in 2021 to 2025; 1 involved a pedestrian.
£9.99 The Street Dossier Full Report for a home on Chambers Lane: its own records, questions to ask the seller and everything on this page, in one PDF. Choose the home
House sales on this street
No sales recorded on this street since January 1995 under this street name.
House prices and rents in North Hertfordshire
A typical home in North Hertfordshire cost £422,835 in August 2026, 3.1% more than a year before. That is 12% more than five years earlier and 23% more than ten years earlier.
| Home | Typical price, Aug 2026 |
|---|---|
| Detached | £798,369 |
| Semi-detached | £486,365 |
| Terraced | £383,241 |
| Flat or maisonette | £229,978 |
| Bought by a first-time buyer | £343,025 |
Private renters in North Hertfordshire paid £1,445 a month on average in September 2026, 6.4% more than a year before. That is 38% more than five years earlier.
| Home | Average rent a month, Sep 2026 |
|---|---|
| One bedroom | £1,031 |
| Two bedrooms | £1,293 |
| Three bedrooms | £1,588 |
| Four or more bedrooms | £2,252 |
Energy performance certificates
18 homes with a current certificate; median floor area 83 m². Most common: House, mid-terrace (10); House, detached (4); House, end-terrace (2). Built: 1900-1929 (8); before 1900 (3); 1967-1975 (2). Tenure at assessment: owner-occupied (11); rented (private) (2).
Each home's certificates and sales (18 addresses)
- 1 Raymond Cottages, Upper Green, Ickleford
- 1 Raymond Villas, The Green, Ickleford
- 2 Raymond Cottages, Upper Green, Ickleford
- 2 Raymond Villas, The Green, Ickleford
- 2 Upper Green, Ickleford
- 3 RAYMOND COTTAGES, UPPER GREEN
- 3, Upper Green, Ickleford
- 4 Raymond Cottages, Upper Green, Ickleford
- 4 Upper Green, Ickleford
- 5 Raymond Cottages, Upper Green, Ickleford
- 5 Upper Green, Ickleford
- 6 Raymond Cottages, Upper Green, Ickleford
- 6, Upper Green, Ickleford
- 7 RAYMOND COTTAGES, UPPER GREEN, ICKLEFORD
- 7, Upper Green, Ickleford
- 8 RAYMOND COTTAGES, UPPER GREEN, ICKLEFORD
- 9, Upper Green, Ickleford
- Raymond House, Upper Green, Ickleford
Gas and electricity use
Homes with gas used 15,318 kWh of it on average in 2024, 32% more than the district's 11,641 kWh, and 2,739 kWh of electricity, 24% less than the district's 3,585 kWh. There are gas meters for about 100% of the homes.
| Postcode | Electricity meters | Typical electricity | Gas meters | Typical gas |
|---|---|---|---|---|
| SG5 3YE | 10 | 3,415 kWh | 16 | 13,737 kWh |
| SG5 3YG | 8 | 2,416 kWh | 5 | 15,924 kWh |
| SG5 3YH | 11 | 2,469 kWh | 10 | 10,316 kWh |
These are all the homes on each postcode, whatever their size and however many live in them, so they show the kind of homes and heating here rather than what any one home uses. The typical figure is the median: half the homes used less. The district is SG5.
Council tax
What each band costs in North Hertfordshire in 2026-27: Band D £2,449 a year on average, including the police, fire and any county and parish charges.
| A | B | C | D | E | F | G | H |
|---|---|---|---|---|---|---|---|
| £1,632 | £1,904 | £2,176 | £2,449 | £2,993 | £3,537 | £4,081 | £4,897 |
Homes by band in the neighbourhood around this street: most are in band C (25% of about 1,270 homes).
Planning and heritage
- Conservation area: yes, Ickleford (council page). Extensions, demolition, some windows and doors, and work on trees need consent.
- Listed buildings on or by this street: 10.
- 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.
Listed buildings
- CHURCH OF ST KATHERINE (CHURCH OF ENGLAND), grade I
- 3-5, CHURCH PATH, grade II
- ARNOLDS FARM, grade II
- GATEWAY AND FRONTAGE WALL TO ICKLEFORD JMI SCHOOL, grade II
- GREENFIELD COTTAGE, grade II
- OLD S RANGE OF ICKLEFORD JMI SCHOOL, grade II
- PLUME OF FEATHERS PUBLIC HOUSE, grade II
- ROSE COTTAGE, grade II
- ST KATHERINES COTTAGES, grade II
- THE COTTAGE, grade II
Energy projects nearby
3 energy projects near the street's postcodes.
| Project | Kind | Size | Stage | Distance |
|---|---|---|---|---|
| Hitchin North Hertfordshire 04/00779/1CM | Landfill Gas | 1.5 MW | Operational Nov 2006 | 1.3 km (0.8 miles) |
| Arlesey Landfill Site Central Bedfordshire BC/CM/97/00013 | Landfill Gas | 1.1 MW | Operational Jul 1998 | 3.3 km (2 miles) |
| Arlesey Landfill Gas (Extension) Central Bedfordshire BC/CM/2005/21 | Landfill Gas | 2.3 MW | Operational Dec 2006 | 3.5 km (2.2 miles) |
Planned projects can change or not go ahead; search the planning authority's applications by the reference shown for the plans, conditions and any objections. Construction brings traffic for some months; once built, solar farms and batteries are usually quiet, while turbines and waste plants can be seen or heard further away.
Roadworks
No street works under way, planned or finished in the last three months on this street, in permits up to 31 October 2026.
Flood risk
Rivers, the sea or surface water: in this street's postcodes, 2 addresses are in areas at high risk, 1 at medium risk and 4 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 |
|---|---|---|---|
| SG5 3YE | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| SG5 3YF | not in 2 or 3 | 0 / 0 / 2 | unlikely |
| SG5 3YG | not in 2 or 3 | 2 / 1 / 2 | unlikely |
| SG5 3YD | not in 2 or 3 | 0 / 0 / 0 | unlikely |
| SG5 3YH | not in 2 or 3 | 0 / 0 / 0 | unlikely |
Recorded floods
No recorded flood covers the centre of any of this street's postcodes.
Recorded floods are where floodwater was seen or surveyed after a flood. Many floods were never mapped, an outline over a postcode's centre does not mean every home in it flooded, and homes outside one may have. Ask the seller whether the home itself has flooded.
Coastal erosion
No projected coastal erosion zone is within 1 km (0.6 miles) of the street's postcodes.
Storm overflows
2 storm overflows within 1 km (0.6 miles) of the street's postcodes spilled 16 times, for 26 hours in all, in 2025. They discharge into River Hiz.
| Overflow | Into | Spills | Hours | Distance |
|---|---|---|---|---|
| Hitchin Water Recycling Centre Anglian Water | River Hiz | 3 | 1 | 600 m (0.4 miles) |
| Hitchin Water Recycling Centre Anglian Water | River Hiz | 13 | 26 | 600 m (0.4 miles) |
A storm overflow lets sewage diluted with rainwater into a river, stream or the sea when heavy rain overwhelms the sewers, so the spills here affect the water they run into, not homes. A spill is counted the regulators' way: a first 12 hours, then each 24 hours it goes on.
Coal mining
No postcode centre on the street is in a coalfield: the Mining Remediation Authority records no coal mining risk here.
Radon
The highest radon potential in the 1 km squares around the street's postcodes is 1 to 3%: up to that share of homes there is estimated to be at or above the Action Level of 200 becquerels per cubic metre. At least part of that area is a radon Affected Area, where 1% or more of homes are.
Radon is a natural radioactive gas from the ground that can build up indoors; long exposure raises the risk of lung cancer. A three-month test with two small detectors is the only way to know a home's level, and a high level can usually be brought down with a sump or better ventilation. UKHSA sells a radon report for a single address from its detailed map at ukradon.org.
Historic landfill
4 historic landfill sites are within 500 m (0.3 miles) of the street's postcodes, the nearest 280 m away.
| Site | Waste went in | Waste | Distance |
|---|---|---|---|
| Land off Cadwell lane Hitchin, Hertfordshire | Not recorded | Not recorded | 280 m |
| Gerry's Hole Ickleford, Near Hitchin, Hertfordshire | 1970 to 1993 | Inert | 310 m |
| Lower Green Ickleford, Hitchin, Surrey | 1955 to 1970 | Inert | 480 m (0.3 miles) |
| Cadwell Lane Hitchin, Hertfordshire | 1970 to 1993 | Inert | 490 m (0.3 miles) |
Closed tips can give off gas (methane and carbon dioxide) and leak into the ground for years. An environmental search, which conveyancers usually order, looks at landfill and contaminated land around the home; the council keeps a register of land it has found to be contaminated.
Height above sea level
The street's 40 addresses are between 51 m and 53 m above sea level (52 m on average).
Broadband
| Postcode | Superfast (30 Mbit/s+) | Ultrafast (300 Mbit/s+) | Gigabit | Below 10 Mbit/s |
|---|---|---|---|---|
| SG5 3YD | 100% | 67% | 67% | 0% |
| SG5 3YE | 100% | 91% | 91% | 0% |
| SG5 3YF | 100% | 100% | 100% | 0% |
| SG5 3YG | 100% | 100% | 100% | 0% |
| SG5 3YH | 100% | 100% | 100% | 0% |
Getting around
| Nearest | Distance | |
|---|---|---|
| Railway stations | Hitchin 2.9 million journeys in 2024–25 | 2.4 km (1.5 miles) |
| Letchworth Garden City 1.8 million journeys in 2024–25 | 3.6 km (2.2 miles) | |
| Arlesey 688,000 journeys in 2024–25 | 6 km (3.7 miles) | |
| Bus stops | 4 stops within 400 m (0.2 miles), 7 within 800 m (0.5 miles); nearest St Katharine's Church Ickleford | 170 m |
| Bus or coach station | Bus Station Stevenage | 9.4 km (5.8 miles) |
| EV charging points | Shell Recharge Charging Station | 2.5 km (1.5 miles) |
| Airport with scheduled flights | London Luton Airport LTN | 12.5 km (7.7 miles) |
Local services
| Nearest | Distance | |
|---|---|---|
| GP surgeries | Regal Chambers Surgery Good Apr 2016 | 2.2 km (1.4 miles) |
| Pharmacies | Cross Chemist | 1.9 km (1.2 miles) |
| NHS dentists | Dental Surgery | 2.4 km (1.5 miles) |
| Hospital | The Lister Hospital Requires improvement Nov 2023 | 7.1 km (4.4 miles) |
| Care homes | Westbourne Care Home Good Oct 2022 | 2.3 km (1.4 miles) |
| Police station | Hitchin Police Station | 2 km (1.3 miles) |
| Cash machines | Payzone | 1.7 km (1.1 miles) |
Parks and green space
| Nearest | Distance | |
|---|---|---|
| Park or garden | 1 within 800 m (0.5 miles); nearest Upper Green 2,950 m² | 120 m |
| Play area | 1 within 800 m (0.5 miles); nearest Unnamed 890 m² | 160 m |
| Playing field | 2 within 800 m (0.5 miles); nearest Unnamed 3.3 ha | 130 m |
| Allotments | 4 within 800 m (0.5 miles); nearest Unnamed 1,050 m² | 550 m (0.3 miles) |
Within 800 m (0.5 miles): 1 park or garden, 0.3 hectares in all.
Landmarks
The nearest historic landmark is Church of St Katherine (Church of England), a listed building (Grade I), 200 m south. 32 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 Katherine (Church of England) | Listed building, Grade I | 200 m south |
| Name | What it is | From the middle of the street |
|---|---|---|
| Gerry's Hole | Lake or reservoir | 410 m (0.3 miles) south-east |
| Fox Covert | Wood | 1.7 km (1.1 miles) north-east |
| Bearton Pond | Lake or reservoir | 1.8 km (1.1 miles) south |
| Wilbury Hill | Hill | 2 km (1.3 miles) east |
| Butt's Close Pond | Lake or reservoir | 2.3 km (1.4 miles) south |
| Ramerick Bottom | Valley | 2.8 km (1.7 miles) north-west |
Air quality
| Pollutant | Here | UK limit | WHO guideline |
|---|---|---|---|
| Nitrogen dioxide (NO2) | 8.2 | 40 | 10 |
| Fine particles (PM2.5) | 7.1 | 20 | 5 |
| Particles (PM10) | 12.3 | 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 |
|---|---|---|
| 55 to 59 | 10 | 0 |
| Under 55 | 30 | 40 |
10 of the street's 40 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 North Hertfordshire: see them on the North Hertfordshire page.
Nearest schools
| School | Phase | Ages | Distance | Inspection | Exam results |
|---|---|---|---|---|---|
| Ickleford Primary School Church of England | Primary | 4–11 | 100 m | No published inspection | 67% at the expected standard in reading, writing and maths, 27% at the higher standard (2025; 77% in 2024 and 72% in 2023) |
| Our Lady Catholic Primary School Roman Catholic | Primary | 5–11 | 930 m (0.6 miles) | Good (Jul 2022, overall grade under the previous framework) | 57% at the expected standard in reading, writing and maths, 7% at the higher standard (2025; 63% in 2024 and 61% in 2023) |
| The Priory School | Secondary | 11–18 | 1.1 km (0.7 miles) | No published inspection | GCSE 2026 (provisional): Attainment 8 46.5 (48.5 in 2025 and 46.5 in 2024); 51% grade 5+ in English and maths A level 2025: average grade B-; 26.2% AAB or better; progress above average |
| Strathmore Infant and Nursery School | Primary | 3–7 | 1.2 km (0.8 miles) | No published inspection | None published |
| York Road Nursery School | Nursery | 2–5 | 2 km (1.2 miles) | No published inspection | |
| Oughton Primary and Nursery School | Primary | 3–11 | 2 km (1.2 miles) | No published inspection | 48% at the expected standard in reading, writing and maths, 3% at the higher standard (2025; 50% in 2024 and 39% in 2023) |
Exam results are from the Department for Education's school performance tables (Explore Education Statistics, Open Government Licence), for all pupils at each school. The middle school in England had 63% at the expected standard at the end of primary school (2025), Attainment 8 of 46.0 at GCSE (2026) and an A level average of C+ (2025). Attainment 8 adds up a pupil's grades in eight GCSEs, with English and maths counted twice (90 is the most), averaged over the school's pupils. Progress 8 compares pupils with others who had the same results at the end of primary school; it is not published for GCSEs in 2025 and 2026, as those pupils sat no primary tests during the pandemic. Small year groups swing from year to year, and figures for very small ones are withheld.
Nurseries and childcare
7 nurseries, pre-schools and clubs within 1.5 km (0.9 miles), the nearest 140 m from the middle of the street.
| Provider | Kind | Places | Latest inspection | Distance |
|---|---|---|---|---|
| Jousters At Ickleford SG5 3TG | Out-of-school day care | 64 | Not inspected yet | 140 m |
| DW Soccer School SG5 1XT | Out-of-school day care (over fives) | Not inspected yet | 930 m (0.6 miles) | |
| Club Excel Leisure @ The Priory School SG5 2UR | Out-of-school day care | 140 | Not inspected yet | 1.1 km (0.7 miles) |
| Smartys Day Nursery SG5 2UZ | Full day care | 58 | Feb 2026: Expected standard in 1 area, Needs attention in 4, Urgent improvement in 1; safeguarding standards not met | 1.2 km (0.7 miles) |
| The Early Bird Pre-School (Strathmore) SG5 1XR | Sessional day care | 35 | Not inspected yet | 1.2 km (0.8 miles) |
| Hitchin House Day Nursery SG4 0TW | Full day care | 135 | Outstanding (Aug 2022, overall grade under the previous framework) | 1.3 km (0.8 miles) |
| Toad Hall Nursery Hitchin SG5 1RT | Full day care | 127 | Good (Jan 2025, overall grade under the previous framework) | 1.4 km (0.9 miles) |
Ofsted also registers 841 childminders and 251 home childcarers (nannies) in Hertfordshire. It does not publish their addresses, so they cannot be shown here; the council's family information service lists those taking children.
Food hygiene ratings nearby
| Business | Type | Distance | Rating | Rated |
|---|---|---|---|---|
| The Plume of Feathers SG5 3YD | Pub/bar/nightclub | 130 m | 3 Generally satisfactory | 24 Apr 2025 |
| Jousters at Ickleford SG5 3TG | Hospitals/Childcare/Caring Premises | 140 m | 5 Very good | 5 Dec 2024 |
| HCL at Ickleford Primary SG5 3TG | School/college/university | 140 m | 5 Very good | 8 Jun 2026 |
| ICKLEFORD COMMUNITY LARDER SG5 3YJ | Retailers - other | 210 m | 5 Very good | 26 Jan 2025 |
| The Old George SG5 3UX | Pub/bar/nightclub | 260 m | 2 Improvement necessary | 22 Apr 2026 |
| Ickleford Stores SG5 3UU | Retailers - other | 290 m | 3 Generally satisfactory | 11 May 2026 |
Crime within 250 m
| Category | Crimes |
|---|---|
| Violence and sexual offences | 7 |
| Criminal damage and arson | 4 |
| Burglary | 2 |
| Drugs | 2 |
| Anti-social behaviour | 2 |
| Public order | 2 |
Most of these are attached to: On or near Witter Avenue (6); On or near Boswell Drive (3); On or near Chambers Lane (3); On or near Greenfield Lane (3); On or near Icknield Close (3).
Road safety
2 collisions in which someone was hurt were reported on and around the street in 2021 to 2025: 0 fatal, 0 serious and 2 slight. 1 involved a pedestrian. Most were on roads with a 30 mph limit.
| Year | Collisions | Fatal or serious |
|---|---|---|
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| Date | Severity | Who was hurt | Road | Conditions |
|---|---|---|---|---|
| 8 Jul 2024 12:27 | Slight | 1 person: 1 pedestrian | Minor road, 30 mph | Daylight |
| 24 Apr 2021 20:33 | Slight | 1 person | Minor road, 30 mph | Daylight |
Only collisions in which someone was hurt and which the police were told about are here: damage-only collisions and near misses are not, and some injuries are never reported. Positions are recorded by the police, usually to within a few metres. Each year's figures are published the following September.
Traffic on nearby roads
No traffic count point is within 500 m (0.3 miles) of the street's postcodes. The Department for Transport counts every motorway and A road and only a sample of minor roads, so a quiet residential street usually has none.
People and work
Who lives here
| Around this street | England | |
|---|---|---|
| Median age | 48 | 40 |
| Children under 15 | 15% | 17% |
| Aged 65 and over | 21% | 18% |
Homes
| Around this street | England | |
|---|---|---|
| Owned (outright or with a mortgage) | 77% | 61% |
| Owned outright | 44% | 33% |
| Shared ownership | under 1% | 1% |
| Social rented | 3% | 17% |
| Private rented | 20% | 21% |
Work and commuting
| Around this street | England | |
|---|---|---|
| Adults (16 and over) in work | 63% | 57% |
| Unemployment (of those working or looking for work) | 3% | 6% |
| Retired (of adults) | 26% | 22% |
| Long-term sick or disabled (of adults) | 2% | 4% |
| Work mainly from home (of those in work) | 49% | 32% |
| Travel to work by car or van | 42% | 48% |
| By train, Underground, metro or tram | 3% | 4% |
| By any public transport, including bus | 3% | 8% |
| On foot or by bicycle | 7% | 10% |
| Work within 10 km (6 miles) of home (of those who travel to work) | 59% | 65% |
| Work 30 km (19 miles) or more away | 12% | 8% |
Education and languages
| Around this street | England | |
|---|---|---|
| Degree or other higher qualification, Level 4+ (of adults) | 48% | 34% |
| No qualifications | 6% | 18% |
| Apprenticeship as highest qualification | 4% | 5% |
| Main language English (aged 3 and over) | 98% | 91% |
| Cannot speak English well or at all | 0% | 2% |
Deprivation
The neighbourhood around this street is in decile 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
- SG5 3YE: 16 addresses of 18 in the postcode
- SG5 3YF: 8 addresses
- SG5 3YG: 8 addresses
- SG5 3YD: 7 addresses of 12 in the postcode
- SG5 3YH: 1 address of 14 in the postcode
Nearby streets
Chambers Lane · Greenfield Lane · Icknield Close · Witter Avenue · Freewaters Close · Boswell Drive · Upper Green · River Court · Green Man Close · Walnut Way · Cedar Avenue · Wyatt Close
All the streets in SG5 and across North Hertfordshire.
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; road collisions count only those in which someone was hurt and the police were told.
- 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.