BTS | Table 3 - Empirical Results for Trip Duration Model

Table 3
Empirical Results for Trip Duration Model

Variable	Coefficient	t-statistic
Constant	2.504	76.81
Trip purpose
Production end (nonhome-based trip is base)
Home-based	0.213	16.16
Attraction end (work purpose is base)
School	0.041	1.56
Social-recreational	0.125	5.11
Shopping	–0.299	–16.07
Other	–0.215	–13.07
Time-of-day variables ("evening" period is base)
morning–a.m. peak/p.m. peak	0.445	15.57
a.m. offpeak/p.m. offpeak	0.176	6.75
Time of day and trip purpose interaction effects
morning–a.m. peak/p.m. peak x nonwork	–0.155	–11.23
a.m. offpeak/p.m. offpeak x social-recreational	–0.261	–8.94
Zonal and trip-related attributes
Zonal size-related variables
Zonal area x 10 –5	1.243	2.56
Zonal acreage in office space x 10 –3	2.363	3.85
Number of people in service employment x 10 –5	2.544	9.75
Zonal acreage in manufacturing facilities x 10 –4	6.917	5.19
Zonal acreage in retail facilities x 10 –3	–2.266	–4.82
Zonal acreage in institutional facilities x 10 –3	–1.020	–2.54
Zonal nonsize-related variables
Zonal household density x 10 –3	–1.612	–4.42
Median income of zone x 10 –6	–2.576	–6.55
Presence of an airport or airport-related infrastructure x 10 –2	5.342	2.56
Trip-related variables
Intrazonal trip	–0.777	–33.95
Intrazonal p.m. peak trip	–0.189	–5.08
Intrazonal shopping/social-recreational trip	0.158	6.12