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Chapter 1 x Executive Summary
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<br />alternatives provide direct service to multiple destinations and in the case of the One Express
<br />Lane in Each Direction (Alternative 5), diminish the corridor capacity for autos. This reduction
<br />induces a modal shift from auto to transit. One Express Lane in Each Direction reduces the peak
<br />direction single-occupant car carrying capacity of the Dumbarton Highway Bridge the most,
<br />providing a single express lane in each direction in place of existing mixed-flow lanes. As a result,
<br />Alternative 5 induces about five percent greater transit use than Reversible Express Lanes
<br />(Alternative 4), which provides one peak-direction express lane in addition to three general-
<br />purpose lanes in the peak direction, providing more capacity.
<br />Table 1-3: Daily Transit Ridership for All Alternatives
<br />Alternative Rail Bus Private
<br />Shuttles Transfers Total
<br />Base Year 2013 0 2,700 1,700 4,400
<br />Short-Term (2020) Alternatives
<br />Alternative 1: No Build 2020 0 4,800 5,900 0 10,700
<br />Alternative 2: Enhanced Bus on Highway Bridge 0 10,200 6,200 500 15,900
<br />Long-Term (2040) Alternatives
<br />Alternative 3: No Build 2040 0 3,500 5,200 0 8,700
<br />Alternative 4: Enhanced Bus on Highway Bridge with
<br />Reversible Express Lanes 0 22,300 5,400 2,600 25,100
<br />Alternative 5: Enhanced Bus on Highway Bridge with One
<br />Express Lane in Each Direction 0 23,800 5,500 2,900 26,400
<br />Alternative 6: Busway on Rail Bridge 0 23,700 4,600 3,000 25,300
<br />Alternative 7: Rail Shuttle on Rail Bridge 13,900 3,300 6,300 1,100 22,400
<br />Alternative 8: Rail Commuter Single-Track on Rail Bridge 12,500 1,000 6,900 0 20,400
<br />Alternative 9: Rail Commuter Double-Track on Rail Bridge 15,300 1,100 6,800 0 23,200
<br />Alternative 10: Combination Bus and Rail (Alternative 5
<br />and Alternative 9) 11,400 18,600 5,000 2,100 32,900
<br />Alternative 11: High-Employment (with Alternative 9) 27,100 1,100 6,600 100 34,700
<br />Source: Fehr & Peers, 2017
<br />6.1.D. - Page 22
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