VKT: VKT estimation for a specific point

In Iavalos/VKT: An implementation of the VKT in a region.

Description

This function estimate the VKT from a specific mode, purpose and average travel distance.

Usage

VKT(population, employment, distance_per_trip, trips_per_person,
    trips_per_employee,selected_mode_fraction,
    selected_purpose_fraction)

Arguments

population	Population in selected location
employment	Number of jobs in selected location
distance_per_trip	Distance per trip per person for selected purpose
trips_per_person	Trips per person for selected location
trips_per_employee	Trips per employee for selected location
selected_mode_fraction	Fraction of trips for selected mode
selected_purpose_fraction	Fraction of trips for selected purpose
mode	Is the travel modal where we want to estimate the VKT, this can be a car or public transport.
policy_elasticity	Is the policy elasticity that will intervene in the VKTs estimation.
Npt	Fraction of trips for selected purpose

Value

a numerical value that represents the vehicle kilometre travelled based on the data included.

Author(s)

Ricardo Ochoa

Examples

data("Base_table_ENG")
df <- Base_table_ENG[,c("population", "employment")]

#To estimate for all rows in a data frame
df$vkt <- VKT(population = df$population,
              employment = df$employment,
              distance_per_trip = 4.34,
              trips_per_person = 2.63,
              trips_per_employee = 0.5,
              selected_mode_fraction = 0.62183751,
              selected_purpose_fraction = 0.316)

#To estimate the VKT for a especific point
VKT(population = 93000, employment = 34000, distance_per_trip = 4.34, trips_per_person = 2.63,
    trips_per_employee = 0.5,selected_mode_fraction = 0.62183751,
    selected_purpose_fraction = 0.316)

#To estimate the VKT with the intervention of a policy
VKT(population = 1028,
      employment = 203,
      distance_per_trip = 4.50,
      trips_per_person = 3.9,
      trips_per_employee = 2,
      selected_mode_fraction = 0.0068,
      selected_purpose_fraction = 0.55,
      policy_elasticity = 3.5, #reduction with the new policy(%)
      mode = "Bus", #Public transport or private vehicle
      Npt = 25) #New % occupation

Iavalos/VKT documentation built on Sept. 27, 2020, 11:43 p.m.