A horizontal curve on a two$-$lane highway $(3\mathrm{.}6-$m lanes$)$ has PC at station $3+765$ and PT at station $3-940.$ The central angle is $34$ degrees, the superelevation is $0\mathrm{.}08,$ and $6$ m are cleared $($for sight distance$)$ from the inside edge of the innermost lane. Determine a maximum safe speed $($assuming currentdesignstandards$)$ to the nearest $10$ km$/$h$.$