|How effective do you think - Improving the timing of traffic lights - is in easing traffic congestion?|
|Not so effective||5%|
|Not effective at all||5%|
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.