DALLAS — Phoenix voters have approved a $31.7 billion, 35-year transportation plan supported by an increased and extended special city sales tax that will fund a tripling of Valley Metro's light rail system along with more buses and city street upgrades.

Unofficial results of more than 70% of the vote on Tuesday counted show the Transportation 2050 plan passed with 55% in favor. The city clerk's office said a final, official tally will not be available until Friday.

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