Transcript Legislative report calculations

CTR Performance
2013/2014 Cycle
Paul Mason
Lynn Peterson
Performance Analyst
Secretary of Transportation
CTR Performance
WSDOT Nisqually Board Room
October 23, 2015
Foreword – The Latest Aggregate Report
Outdated Aggregate Report (9/18)
Latest Aggregate Report (10/18)
 Certain sites were initially excluded
in the 2013/2014 aggregate report
due to response rates.
 Consistent with previous cycles,
some sites were added in, since
their somewhat lower response
rates are statistically valid
 948 Sites
 966 Sites
 DAR decreased 2.2%
 DAR decreased 2.6%
 VMT/Employee decreased 1.4%
 VMT/Employee decreased 3.1%
 18 million more miles annually
 33 million fewer miles annually
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The Source – Aggregate Report
***Michael is available for questions at the end of the presentation***
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The Calculations
2007/2008
2013/2014
Approach:
 Replicate the approved methodology used for previous cycles
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The Calculations - Continued
A Brief Overview:
 Compare baseline (2007/2008) results to current 2013/2014 results
(at the jurisdiction level)
 Drive Alone Rate
 Total Weekly Trips
 Total Vehicle Miles Traveled (VMT) per Employee per Trip
 Convert the weekly survey results into annual numbers
 Add up and report the reductions in:
 Trips
 VMT
 Use a conversion factor to convert VMT into a Greenhouse Gas
(GHG) reduction
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Between 2012 and 2014, the Board requested
pilot projects, to test techniques outside of the
survey. As a result, the number of surveys
distributed decreased from ‘12 to ’14.
Participation
600,000
Number of Surveys
500,000
400,000
300,000
200,000
100,000
0
2007
2008
2009
2010
2011
2012
Year (End of Survey Cycle)
2013
2014
2015
Surveys Distributed
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Participation
Note in the baseline ‘07/’08 the return rate was 70.6%
There was a drop in response rate in ‘09/’10, and
‘11/’12, with the ‘12 rate being 58.0%.
However, in ‘13/’14, the response rate increased to 66.1%
600,000
Number of Surveys
500,000
400,000
70.6%
64.2%
58.0%
66.1%
300,000
200,000
100,000
0
2007
2008
2009
2010
2011
2012
Year (End of Survey Cycle)
Surveys Distributed
2013
2014
2015
Surveys Returned
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Number of Surveys
600,000
1,200
500,000
1,000
400,000
800
70.6%
64.2%
58.0%
66.1%
300,000
600
200,000
400
100,000
200
0
2007
2008
2009
2010
2011
2012
Year (End of Survey Cycle)
Surveys Distributed
Surveys Returned
2013
2014
Number of Worksites
Between 2012 and 2014, the Board requested
pilot projects, to test techniques outside of the
survey. As a result, the number of worksites
distributed decreased from ‘12 to ’14.
Participation
0
2015
Worksites
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Non-Drive Alone Rate
In the baseline year, the non-drive alone rate
was 34.3%
In subsequent years, the rate has been roughly 37%
100%
So, despite an increase in the number of employees
affected by the program, the mode split for CTR sites
has been able to maintain itself around 37%
Non-Drive Alone
80%
60%
40%
37.2%
34.3%
36.9%
36.5%
20%
0%
2007
2008
2009
2010
2011
2012
Year (End of Survey Cycle)
2013
2014
2015
Non-Drive Alone Rate
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16
24
21.53
14
20.48
20.53
20.72
10.39
10.40
10.59
21
10.92
12
18
10
15
8
12
6
9
4
6
2
3
0
2007
2008
2009
2010
2011
2012
Year (End of Survey Cycle)
Daily Vehicle Miles Traveled
2013
2014
0
2015
Daily Greenhouse Gas per Employee (Pounds)
Vehicle Miles Traveled Per Employee Per Trip
Vehicle Miles Traveled and Greenhouse Gases
Daily GHG per Employee (pounds)
While the above numbers may not look impressive on the surface, the bigger story is that even with
a growing economy and adding more and more employees, the vehicle miles traveled per person
has improved, decreasing by about 3% from the baseline.
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Questions about the Aggregate Report?
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