The state Department of Transportation has approved funding for Danbury and New Fairfield to study the Route 37 corridor, according to New Fairfield officials.  The safety study, which costs $150,000, will look into improving the mobility, congestion and safety of the 11-mile stretch  from Downs Street in Danbury to the intersection with Pembroke Road and Brush Hill Road in New Fairfield.  Some examples where improvements could be made are at the intersections with Main Street, Balmforth Avenue, Golden Hill Road and Jeanette Street.  The study would also evaluate the possibility of adding pedestrian and bike areas along the corridor.  Danbury and New Fairfield officials are looking into a walking trail along Margerie Lake Reservoir.