By Dan Telvock

BUFFALO, N.Y. -Public Bridge Authority officials say they're focused on expanding the Peace Bridge Plaza on the American side because it will improve traffic flow.

But a look at the authority's books reveals another possible motive: Money.

While passenger vehicles account for almost 80 percent of bridge traffic, car tolls account for only 21 percent of authority revenue.

Truck tolls, on the other hand, generate 48 percent of the authority's revenues, almost $16 million a year.

Duty Free stores at the base of the bridge in Buffalo and Fort Erie account for another 22 percent, or $7.2 million projected for this fiscal year.

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