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update documentation
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divyasharma-arup committed Apr 10, 2024
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10 changes: 7 additions & 3 deletions KPI_Data_Requirements_and_Expectations.md
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Expand Up @@ -72,16 +72,20 @@ way:
</vehicleType>
```

Otherwise, the factors will default to `"fuelType"="petrol"` and `"emissionsFactor"=0.222` for personal agent's cars and
Otherwise, the factors will default to `"fuelType"="petrol"` and `"emissionsFactor"=0.222` for personal agent's cars, `"fuelType"="ev"` and `"emissionsFactor"=0.076` for
drt vehicles, and `"fuelType"="cng"` and `"emissionsFactor"=1.372` for buses.
Other PT vehicles are not defaulted and do not contribute to emission calculations.

We recommend setting fuel types and emission factors for LGVs and HGVs, otherwise they may will regarded as personal cars.
The defaults we use are:
We recommend setting fuel types and emission factors for LGVs and HGVs, otherwise they will not have an emissions estimate.
The defaults we suggest are:

- LGV: `"fuelType"="petrol"`, `"emissionsFactor"=0.317`
- HGV: `"fuelType"="diesel"`, `"emissionsFactor"=0.761`

The above values are all based on the European Environmental Agency guidebook.
Car, LGV, HGV, and Buses emissions factors are derived from Tables 3-12 and 3-15 from their [guidebook](https://www.eea.europa.eu/publications/emep-eea-guidebook-2023/part-b-sectoral-guidance-chapters/1-energy/1-a-combustion/1-a-3-b-i/view)
EV emissions factors for cars are from page 32 of their [report](https://www.eea.europa.eu/publications/electric-vehicles-from-life-cycle) estimating life cycle emissions.

# Access to Mobility Services

The $(x, y)$ spatial coordinates are assumed to be in metre-based, distance-preserving projection.
2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -364,7 +364,7 @@ We will add more KPIs as we go, but for now, these are the KPIs generated by Gel
| Quality of Life | Access to Mobility Services | `kpi-access-to-mobility-services-access-to-{bus,rail,pt-and-pt-used}.csv.gz` | Percentage of agents whose homes are within 400m of bus stops, 800m of rail stops, and whether they used PT for travel | From trip logs, we obtain agents' 'home' activity locations. We find whether there is a stop that serves transit services of modes 'bus' and 'rail', within distances of 400 and 800 metres of person's home location, respectively. | `intermediate-access-to-mobility-services.csv.gz` |
| <ul><li>Quality of Life</li><li>Mobility System Performance</li></ul> | Affordability | `kpi-affordability.csv.gz` | Ratio of average spend on transport of low income agents : overall average spend on transport of all agents | Using leg logs and monetary scoring values per mode and person's subpopulation (per distance unit and constant), and/or Person Money Events, compute monetary cost for each leg. We compute total and average daily spend on transport by income brackets (numeric values for income are required) or subpopulation, if not available, (if `low income` subpopulation is available, otherwise only intermediate output is generated). Read more: [KPI Data Requirements and Expectations: Affordability](KPI_Data_Requirements_and_Expectations.md#affordability). | `intermediate-affordability.csv.gz` |
| <ul><li>Global Environment</li><li>Mobility System Performance</li></ul> | Congestion | `kpi-congestion.csv.gz` | Delays in road traffic and in public transport during peak hours compared to free flow travel | Capture free-flow time at the link level, subtract congested time from this value. Congested time is the difference between link entry and exit time. | `intermediate-congestion.csv.gz` |
| Global Environment | GHG Emissions | `kpi-ghg-emissions.csv.gz` | Total Emissions emitted by vehicles | Total kilometres travelled by vehicles multiplied by default emission factors of 0.222 (car) and 1.372 (bus), respectively; or as set by you - read more in [KPI Data Requirements and Expectations: GHG Emissions](KPI_Data_Requirements_and_Expectations.md#ghg-emissions). | `intermediate-ghg-emissions.csv.gz` |
| Global Environment | GHG Emissions | `kpi-ghg-emissions.csv.gz` | Total Emissions emitted by vehicles | Total kilometres travelled by vehicles multiplied by default emission factors of 0.222 kg C02/km (car) and 1.372 kg CO2/km (bus), respectively; or as set by you - read more in [KPI Data Requirements and Expectations: GHG Emissions](KPI_Data_Requirements_and_Expectations.md#ghg-emissions). | `intermediate-ghg-emissions.csv.gz` |
| <ul><li>Global Environment</li><li>Mobility System Performance</li></ul> | Mobility Space Usage | `kpi-mobility-space-usage{-per-activity-type}.csv.gz` | Estimated parking space demand per capita | Number of persons at facilities, per activity type, who arrived there by car. We use a parking space factor of 11.5 ([link](https://www.interparking-france.com/en/what-are-the-dimensions-of-a-parking-space/)) to calculate total parking demand and weigh it by number of trips. | `intermediate-mobility-space-usage.csv.gz` |
| <ul><li>Social</li><li>Mobility System Performance</li></ul> | PT Wait Time | `kpi-pt-wait-time.csv.gz` | Average time waiting for a PT boarding | Average trip wait times by transport mode. | `intermediate-pt-wait-time.csv.gz` |
| <ul><li>Quality of Life</li><li>Economic Success</li></ul> | Travel Time | `kpi-travel-time.csv.gz` | Average travel time across all trips, in minutes | Using trip logs, convert travel time to minutes, average across the trips. | `intermediate-travel-time.csv.gz` |
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