SmarTraveler
Road and traffic information for major U.S. cities, through a series of clickable maps.
www.smartraveler.com/   reviews

SmarTraveler Boston Map
SmarTraveler Boston - Real-time, route-specific, traffic, transit, and traveler information for the greater-metropolitan Boston area.
www.smartraveler.com/scripts/bosmap.asp?city=bos&cityname=Boston   reviews