More Bike Metrics

Some more bike metrics as we wish away the snow that is coming. Again the ACS designed to measure the characteristics of the population.  The proportion of workers commuting by bicycle is a characteristic.  So below is the same ACS data plotted over time shown as the prevalence of commuting by bicycle.

If you asked me which ACS estimates are most reliable, I have to go with the 5-year estimates with the smallest margins of error. See those estimates in orange which show a pretty steady progression. 

 

Data for the graph above is below. All data is for the city of Pittsburgh.

ACS Dataset	Total Resident Workers	Bicycle Commuters
2005	128,161	1,300	1.0%
2006	132,882	1,125	0.8%
2005-2007	130,490	1,288	1.0%
2007	128,408	1,382	1.1%
2006-2008	133,771	1,175	0.9%
2005-2009	144,054	1,609	1.1%
2008	138,832	1,069	0.8%
2007-2009	146,189	1,603	1.1%
2006-2010	141,987	1,692	1.2%
2009	147,314	1,995	1.4%
2008-2010	143,025	1,805	1.3%
2007-2011	141,493	1,850	1.3%
2010	138,929	2,267	1.6%
2009-2011	140,658	2,041	1.5%
2008-2012	142,577	1,893	1.3%
2011	135,738	1,894	1.4%
2010-2012	140,456	2,092	1.5%
2012	146,828	2,024	1.4%