Consider a zone with the following characteristics: Household Type 0 car 1 car 2 or more cars Average Number of Household Households in Zone 180 80 40 Income $ Month 4,000 18,000 50,000 Inhabitants Trips Generated Per Day Household Household 4 4 16 6 8 11 a. Calculate the total population in the zone. b. Calculate the total number of vehicles owned in the zone. c. Calculate the total number of trips generated from this zone. d. It is expected that, due to an increase in income of 30% 5 years from now, 50% of the households without a car would then be able to afford a car. Discuss how you would modify the above table and estimate the zonal trip generation.