$1.$ Lane Widening: There is a single$-$quadrant interchange with another two$-$lane principal arterial along a route.$$ Determine the amount of widening of the ramp curve compared to the tangent roadway with a ramp curve radius of $50$ m$.$ Use WB$-12$ as the design vehicle. You have already concluded that the intersection has Traffic Condition C$.$ Assume the ramp lane provides for two$-$way, two$-$lane travel.$$ Also assume tangent widths based on standard highway lane width for the main highway segment.$$ The design speed for the ramp is $40$ km$/$hr$.$ Lane width is $3\mathrm{.}4$ m $(11$ ft$).$ Round your answer up to the next greatest tenth of a meter.