Table 12
Weekday Regional Trips per Household by Housing Structure Type
San Francisco Bay Area: 1965, 1981 & 1990 Household Travel Surveys

Housing
Structure Type
Year Percentage
of Households
Home-Based Non-
Home-Based
Total
Work Shop/
Other
Social/
Recreation
School
Single family
1965 66% 1.978 3.257 1.353 1.380 2.164 10.131
1981 64% 2.134 2.727 1.467 1.230 2.639 10.196
1990 63% 2.176 2.220 0.972 0.906 2.369 8.643
% Diff. 65-90 10% -32% -28% -34% 9% -15%
Condominium or townhouse
1965 0% NA NA NA NA NA NA
1981 5% 1.924 1.807 1.148 0.454 2.339 7.672
1990 8% 1.851 1.407 0.660 0.436 2.043 6.397
% Diff. 81-90 -4% -22% -43% -4% -13% -17%
Duplex
1965 8% 1.713 2.068 0.930 0.778 1.377 6.866
1981 6% 1.665 1.902 1.131 0.626 2.038 7.362
1990 5% 1.922 1.458 0.783 0.650 1.849 6.663
% Diff. 65-90 12% -29% -16% -16% 34% -3%
Apartment
1965 26% 1.632 1.667 0.861 0.509 1.459 6.128
1981 25% 1.428 1.411 0.809 0.521 1.667 5.835
1990 25% 1.644 1.314 0.552 0.479 1.510 5.499
% Diff. 65-90 1% -21% -36% -6% 3% -10%
All households
1965 100% 1.858 2.732 1.184 1.098 1.906 8.778
1981 100% 1.890 2.274 1.262 0.952 2.335 8.713
1990 100% 1.991 1.891 0.827 0.744 2.100 7.553
% Diff. 65-90 7% -31% -30% -32% 10% -14%