time_benefits: Calculate time savings benefits over full appraisal period

In DanBoyB/cba: A collection of tools for simple cost benefit analysis of simple road realignment schemes

Description

A function to read in appraisal paramaters, time savings calculated and traffic projections to calculate scheme benefits from time savings

Usage

time_benefits(opening_yr, appr_period = 30, resid_period = 30, disc_rate,
  price_base_yr = 2011, ave_veh_occ = 1.2, traffic_proj, time_saving)

Arguments

opening_yr	The proposed year of scheme opening
appr_period	The standard appraisal period in years
resid_period	The residual value period in years (in addition to the standard appraisal period)
disc_rate	The test discount rate as a decimal
price_base_yr	The price base year assumed for the appraisal. Defaults to 2011
ave_veh_occ	The average vehicle occupancy (persions per vehicle)
traffic_proj	A dataframe of annual traffic flow projections
time_saving	A vector of time savings in hours

Value

A dataframe of discounted scheme benefits

DanBoyB/cba documentation built on May 6, 2019, 1:21 p.m.