Research Article

Analysis of the Technical Efficiency of Urban Bus Services in Spain Based on SBM Models

Table 4

Variables: types, definitions, values, and units.
 Variable name Type Definition Minimum value Maximum value Units Vehicles-km per year (VK) Endogenous. Output This figure is calculated taking into account existing vehicles in the fleet and the distance they have traveled in operation throughout the year 1.9 100.4 Million vehicle-km/year Routes length (RL) Endogenous. Input It is calculated by adding the length traveled (in km) between the two extreme stops (head and end) of each line. If several lines share the same stretch of the route, the route is counted as many times as existing lines. The circular lines are counted twice. Only daytime network is accounted 147 3,870 km Number of vehicles (NV) Endogenous. Input Number of buses in the fleet 42 2,092 𝑛 ∘ of vehicles Company costs (CC) Endogenous. Input It Includes: personnel costs (including social security and pensions), energy costs, purchase of goods and external services (including outsourcing), maintenance costs (except those included in investment expenses), financial expenses, depreciation costs, taxes, and fees. In all cases, it includes only the actual expenditure incurred, not spending approvals made 5.69 413.75 Million euro/year Main city population (MCP) Exogenous. Socio economic Population of the main city. Calculated at the first of January of the analyzed year 131,731 3,255,944 Inhabitants Metropolitan area population (MAP) Exogenous. Socio economic Population of the metropolitan area. Calculated at the first of January of the analyzed year 246,056 6,386,932 Inhabitants Main city surface (MCS) Exogenous. Socio economic The main city's surface is the municipality surface 25 974 km2 Metropolitan area surface (MAS) Exogenous. Socio economic The metropolitan area's surface is the zone where public transport authority offers services 37 11,313 km2 Regional GDP per capita (RGDP) Exogenous. Socio economic Gross domestic product in the metropolitan area's region. It is divided by the total number of inhabitants of the region 15,021 31,496 Euro/inhabitant Labor force rate of the province (LFRP) Exogenous. Socio economic The labor force includes people aged 16 and over who supply labor for the production of economic goods and services or are in a position to do 49 65 % Unemployment rate of the province (URP) Exogenous. Socio economic Rate of labor force that is unemployed 5 28 % Car ownership at the province (COP) Exogenous. Socio economic Total number of cars and motorbikes at the province. Taxis and vans are not included. It is divided by the total number of inhabitants of the province 413 709 Vehicles/1,000 inhabitants Main city pop. density (MCPD) Exogenous. Urban form Main city's total population divided by main city's total surface 477 8,091 Inhabitant/km2 Metropolitan area pop. density (MAPD) Exogenous. Urban form Metropolitan area's total population divided by metropolitan area's total surface 65 6,650 Inhabitant/km2 Population ratio (PR) Exogenous. Urban form Main city's population divided by metropolitan area's population 0 1 Adimensional. Values between 0 and 1 Surface ratio (SR) Exogenous. Urban form Main city's surface divided by metropolitan area's surface 0 1 Adimensional. Values between 0 and 1 Management (PRIV) Exogenous. Management and alternative modes Dummy variable. It takes value 0 if public management, value 1 if private management. 0 1 Adimensional. Values between 0 and 1 Main city alternative rail modes (MCARMs) Exogenous. Management and alternative modes It takes value 0 if there are no alternative rail modes at the main city, value 1 if there are 0 1 Adimensional. Values between 0 and 1 Metropolitan area alternative rail modes (MAARMs) Exogenous. Management and alternative modes It takes value 0 if there are no alternative rail modes at the metropolitan area, value 1 if there are 0 1 Adimensional. Values between 0 and 1
Data refers to period 2004–2009.

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