thousands of dollars) − 0.12(employment in the household’s
neighborhood in hundreds)
For a household with five members, an annual income of $95,000, and in a neighborhood with an employment of 250, what is the probability of the household making three or more peak-hour trips?
a) 0.071 b) 0.095 c) 0.905 d) 0.024
2. A work-mode–choice model is developed from data acquired in the field in order to determine the probabilities of individual travelers selecting various modes. The mode choices include automobile drive- alone (DL), automobile shared-ride (SR), and bus (B). The utility functions are estimated as:
UDL = 2.6 – 0.3(costDL) – 0.02(travel timeDL)
USR = 0.7 – 0.3(costSR) – 0.04(travel timeSR)
UB = –0.3(costB) – 0.01(travel timeB)
where cost is in dollars and time is in minutes. The cost of driving an automobile is $5.50 with a travel time of 21 minutes, while the bus fare is $1.25 with a travel time of 27 minutes. How many people will use the shared-ride mode from a community of 4500 workers, assuming the shared-ride option always consists of three individuals sharing costs equally?