Problem 2 Trip Distribution Growth Factor Model a By hand es

Problem 2. Trip Distribution: Growth Factor Model (a) By hand, estimate a doubly-constrained (production and attraction constrained) growth factor model using the future year (2020) trip table shown in Table 2 and your projected productions and attractions found in Problem 1. Show ALL calculations for two iterations. one iteration includes a row and column factoring calculation. (b) Does the model converge after two iterations (ie, are estimated trips within 5% of the forecasted trips in each zone)? Table 2. HBW Trip Distribution Matrix (2010) From To 1 2 34 1 250 125 375 75 825 2 100 400 50 225 775 3 205 60 225 420 910 4 155 215 320 175 865 A (j) 710 800 970 895 3375

Solution

Solutions

	Question
	From/To	1	2	3	4		P(i)	5% Production
	1	250	125	375	75		825	866.25
	2	100	400	50	225		775	813.75
	3	205	60	225	420		910	955.5
	4	155	215	320	175		865	908.25
	A(j)	710	800	970	895		3375
	Attraction 5%	745.5	840	1018.5	939.75