Bay Area officials are considering installing tolls on Highway 37 as a way to fund upgrades on the heavily used roadway. Sonoma County Supervisor David Rabbitt, chairman of the Highway 37 Policy Committee, said yesterday that there are “few options other than tolls” to fund projects aimed at finding solutions to increased traffic and flooding. A recent UC Davis study estimated the price tag for improvements to the 21-mile highway would be somewhere between one-and-four-billion dollars. Some numbers being tossed around: tolls could cost anywhere from one dollar to 2-twenty-five