Provides that, as part of the proposition to support additional implementation phases of the regional transit authority's system and financing plan submitted to voters at the 2007 general election under RCW 36.120.070 and 81.112.030(10), the authority shall not fund any planning, development, or construction that is not described in the sound transit 2 draft package, dated January 11, 2007. In addition, the authority may not apply any revenues received from the 2007 general election under RCW 36.120.070 and 81.112.040(10) toward planning, development, construction, acquisition of right-of-way, or financing of light rail over Lake Washington. This provision is not intended to limit a regional transit authority's ability to expand light rail beyond the limitation of this provision after November 2007.

Provides that revenues equal to the amount necessary to fund the expansion of light rail as proposed in the sound transit 2 draft package, dated January 11, 2007, shall be distributed to a regional transportation investment district established under chapter 36.120 RCW in accordance with this act.