time_benefits: Calculate time savings benefits over full appraisal period

Description Usage Arguments Value

View source: R/time-benefits.R

Description

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

Usage

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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 Oct. 1, 2018, 6:12 p.m.