Determine the adjusted saturation flow rate for a lane group comprised of one lane for the through movement, under the following conditions:

Base rate $=1900$ pc$/$h$/$In

Lane width $=3\mathrm{.}3$ m

Heavy vehicles $=4\%$ of the traffic stream

Approach grade $=+3\%$

No on$-$street parking

No bus stops

Bicycle and pedestrian traffic conflicting with this lane group is negligible

Intersection is in a central business district