A horizontal curve on a two$-$lane highway $(12-$ft lanes$)$ has $PC$ at station $123+80$ and PT at station $129+60.$ The central angle is $35$ degrees, the superelevation is $0\mathrm{.}08,$ and $20\mathrm{.}6ft$ is cleared $($for sight distance$)$ from the inside edge of the innermost lane. Determine a maximum safe speed $($assuming current design standards$)$ to the nearest $5m\frac{i}{h}$