Date / 21/12/09
Title / In-use data collection plan
Author / UK
Working paper number / N/A
1.0. Introduction
This in-use data collection plan represents the UK’s plans for contributions to the WLPT drive cycle development. The UK Department for Transport does not have any existing data suitable for use in WLTP; new data will be collected as outlined in this paper.
2.0. Schedule
2.1. Overview of data collection exercise
· Data collection area: UK (exact geographical areas undecided)
· Data collection period: 2010
· Data collected road type: urban/rural/motorway
· Test vehicles: 12 vehicles (light duty commercial vehicles)
· Collected data: Time, Vehicle speed, Engine speed, engine load, bake signal, engine coolant temperature, vehicle position (GPS).
2.2. Vehicle selection
Twelve light duty commercial vehicles will be used to collect data. We have not yet decided which vehicles will be monitored, but these vehicles will represent the UK market mix of light duty commercial vehicles.
2.3. Test location and route selection
Data will be collected for vehicles being used on non-prescribed routes across the UK.
2.4. Driving conditions
2.4.1. Driving behaviour
Drivers will not be given any special instructions.
2.4.2. Driver selection
Both male and female drivers will be used; a range of driver ages will be covered.
2.4.3. Road type
UK road definitions are defined by the population density of the surrounding area. These definitions are used when collecting statistical data on vehicle driving patterns.
Road type definitions
Urban / Rural / MotorwayDefinition / Major and minor roads within an urban area with a population of 10,000 or more.1 The definition is based on the 1991 ODPM (DTLR) definition of Urban Settlements. / All other roads, i.e. those outside areas with a population of 10,000 or more that are not classified as motorway. / Major roads often used for long distance travel. They are usually three or more lanes in each direction and generally have the maximum speed limit of 70mph.
1 Population is measured using the UK population census
2.4.4. Driving period
UK driving periods are defined as:
· Peak — 07:00 to 10:00 and 16:00 to 19:00
· Off-peak — all other times during weekdays
· Weekend — Saturday and Sunday (all day)
2.4.5. Season/weather conditions
Data will be collected during all weather conditions; any data collected during adverse weather conditions will be flagged so that these data points can be removed from analysis, if required.
2.4.6. Time of data collection
Data collection will be executed on each test vehicle during the following period:
Weekday On-peak / Weekday Off-peak / WeekendUrban / X / X / X
Rural / X / X / X
Motorway / X / X / X
2.5. Amount of data to be collected
We will aim to collect 1000km of data per vehicle (spread across the possible combinations of road type/driving period).
2.6. Measurements
For each vehicle the following information will be recorded:
· Vehicle category (Category N1, Class I, II or III)
· Vehicle Excise Duty tax class/band
· Make
· Model
· Model variant (if applicable)
· Engine type (diesel, LPG, hybrid etc.)
· Engine displacement (litres)
· Aspiration (natural/turbocharged)
· Fuel system type (if available)(e.g. common rail direct injection)
· Curb mass (kg)
· Gross vehicle weight (kg)
· Transmission type (manual/automatic)
· Number of (forward gears)
· Maximum rated power (kW)
· Maximum rated speed
· Maximum torque (Nm)
· Drive system (front-wheel, rear-wheel or all-wheel drive)
· Year/date first registered
· Euro emission standard (Euro 4/5/6)
· Gear-shift indicator (GSI) fitted (yes/no)
· Adaptive speed limit indicator fitted (yes/no)
· Speed limiter fitted (yes/no – if yes, limited speed km/h)
· Air conditioning fitted (yes/no)
Each vehicle will be fitted with a portable activity monitoring system and GPS to record the following parameters:
· Date — from GPS
· Time — from GPS (this will recorded in UMT (Universal Mean Time = Greenwich Mean Time), but will be post-processed into local time as appropriate)
· Vehicle speed — direct from the vehicle’s ECU (CAN) and also from GPS
· Engine speed — direct from the vehicle’s ECU (CAN)
· Engine load — direct from the vehicle’s ECU (CAN) (where available)
· Brake signal — direct from the vehicle’s ECU (CAN)
· Engine water temperature — direct from the vehicle’s ECU (CAN)
· Vehicle position — from GPS
· GSI (if fitted) — direct from the vehicle’s ECU (CAN)
In addition to the above, it will also be possible to derive:
· Vehicle acceleration – from the vehicle’s speed
· Road gradient – from GPS (though it should be noted that there are larger errors associated with GPS derived latitude than with position)
Logging rates of up to 10 Hz can be used for the GPS derived data. The CAN data frequency will be dependent on the CAN system, though is likely to be at least 1 Hz.
3.0. Statistical information
We have robust data collected via census (method 1) for all road types. These data were taken from automatic traffic counters located in various regions across Great Britain (no data were taken from Northern Ireland).
The statistical data are summarised on the following page.
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Traffic volume data
Road type / Vehicle type / Traffic volume data (total vehicles per year) / Total network distance (km) /Peak / Off-peak / Weekend / TOTAL /
Urban / Passenger cars / Sum of Number of vehicles / 44,113,200 / 56,593,271 / 32,427,341 / 133,133,812 / 142,023
Sum of Total speed / 2,271,934,042 / 3,012,906,982 / 1,763,835,128 / 7,048,676,152
Average speed (km/h) / 52 / 53 / 54 / 53
Commercial vehicles / Sum of Number of vehicles / 4,961,344 / 6,719,996 / 2,756,477 / 14,437,817
Sum of Total speed / 256,859,270 / 362,449,033 / 152,471,664 / 771,779,967
Average speed (km/h) / 52 / 54 / 55 / 53
All vehicles / Sum of Number of vehicles / 49,074,544 / 63,313,267 / 35,183,818 / 147,571,629
Sum of Total speed / 2,528,793,312 / 3,375,356,015 / 1,916,306,792 / 7,820,456,119
Average speed (km/h) / 52 / 53 / 54 / 53
Rural / Passenger cars / Sum of Number of vehicles / 52,627,205 / 62,495,151 / 40,362,949 / 155,485,305 / 248,885
Sum of Total speed / 4,443,028,693 / 5,367,601,280 / 3,526,903,921 / 13,337,533,894
Average speed (km/h) / 84 / 86 / 87 / 86
Commercial vehicles / Sum of Number of vehicles / 7,225,763 / 9,295,531 / 3,864,397 / 20,385,691
Sum of Total speed / 619,484,079 / 810,948,637 / 348,887,441 / 1,779,320,157
Average speed (km/h) / 86 / 87 / 90 / 87
All vehicles / Sum of Number of vehicles / 59,852,968 / 71,790,682 / 44,227,346 / 175,870,996
Sum of Total speed / 5,062,512,772 / 6,178,549,917 / 3,875,791,362 / 15,116,854,051
Average speed (km/h) / 85 / 86 / 88 / 86
Motorway / Passenger cars / Sum of Number of vehicles / 173,597,541 / 214,280,980 / 140,418,561 / 528,297,082 / 3,559
Sum of Total speed / 18,501,351,774 / 23,985,705,053 / 15,965,179,273 / 58,452,236,100
Average speed (km/h) / 107 / 112 / 114 / 111
Commercial vehicles / Sum of Number of vehicles / 27,227,554 / 39,296,991 / 15,394,443 / 81,918,988
Sum of Total speed / 2,902,167,426 / 4,367,767,333 / 1,767,697,202 / 9,037,631,961
Average speed (km/h) / 107 / 111 / 115 / 110
All vehicles / Sum of Number of vehicles / 200,825,095 / 253,577,971 / 155,813,004 / 610,216,070
Sum of Total speed / 21,403,519,200 / 28,353,472,386 / 17,732,876,475 / 67,489,868,061
Average speed (km/h) / 107 / 112 / 114 / 111
All roads / All vehicles / Sum of Number of vehicles / 309,752,607 / 388,681,920 / 235,224,168 / 933,658,695 / 394,467
Sum of Total speed / 28,994,825,284 / 37,907,378,318 / 23,524,974,629 / 90,427,178,231
Average speed (km/h) / 94 / 98 / 100 / 97
Weighting factor matrix
Peak / Off-peak / Weekend / Peak / Off-peak / Weekend
Urban / Passenger cars / 121,646,631,955.18 / 150,974,135,235.85 / 84,668,793,568.28 / 17.19 / 21.33 / 11.96
Commercial vehicles / 13,610,125,155.88 / 17,694,967,358.47 / 7,077,474,093.30 / 1.92 / 2.50 / 1.00
Rural / Passenger cars / 155,145,868,919.71 / 181,096,942,744.85 / 114,966,384,155.78 / 14.56 / 17.00 / 10.79
Commercial vehicles / 20,976,643,601.93 / 26,518,794,744.97 / 10,653,120,985.66 / 1.97 / 2.49 / 1.00
Motorway / Passenger cars / 5,797,111,660.96 / 6,813,068,365.85 / 4,395,448,790.19 / 12.15 / 14.28 / 9.21
Commercial vehicles / 909,123,283.98 / 1,258,308,374.36 / 477,142,468.84 / 1.91 / 2.64 / 1.00
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