How effective do you think - Using an information system such as electronic signs or other alerts to warn people about traffic jams and suggest other routes - is in easing traffic congestion?
Very effective48%
Somewhat effective37%
Not so effective9%
Not effective at all5%
DK/No opinion1%

Source: A Washington Post poll conducted by telephone January 27-31, 2005, among 1,003 randomly selected adults living in the Washington region, including 110 DC residents, 519 Maryland residents and 374 Virginia residents. Margin of sampling error for overall results is plus or minus 3 percentage points; for regional commuters, it is plus or minus 4 percentage points. Fieldwork by TNS of Horsham, PA.
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