First Name | Walter |
---|---|
Last Name | Brewer |
Email Address | catcar38@verizon.net |
Affiliation | Transportation Analysist |
Subject | Recomendation: San Diego SCS/2050RTP |
Comment | Mass transit and walk/bike paths in San Diego’s 2050RTP Sustainible Communities Strategy provide less than 5% of fuel savings the principal factor in GHG emissions. 95% is provided by already planned improvements to on-road, vehicles with potential for even more. Especially for personal transportation, in the time period to 2050. The entire near trivial SCS contribution to transportation energy reduction can be replaced by less than a one MPG improvement in on-road vehicles. $46 billion, 48% of the capital budget in 2050RTP is spent for this near trivial impact, Thus SCS should be disapproved by ARB under its responsibility for effective means to provide clean air quality despite agreement with SANDAG analysis. Instead, as provided in SB-375, an alternative Strategy should be recommended to correct the noted slippage of GHG reduction after 2035, and provide support for further on-road vehicle improvement and to correct increased traffic congestion These findings are not explicit in 2050RTP or SCS. However they may be calculated easily using table TA 3.1. Assumptions: Comparisons are with respect to SANDAG’s 2008 existing baseline, not the hypothetical No-Build. On-road vehicle occupancies are; 1.3 for existing, and 1.4 for 2050 reflecting greater carpooling assumption. Mass transit existing energy use is 3,000 BTU/passenger-mile, decreasing to 2050 at the same rate as on-road vehicles. While there are non-transportation options in the current SCS to reduce energy use and emissions, hopefully ARB will reject it as part of a transportation plan responding to SB-375’s priority to reduce energy and GHG through motor vehicle improvements and use. |
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Date and Time Comment Was Submitted | 2011-09-19 06:26:04 |
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