A rural $2-$way$-2-$lane road $($lane width is $3\mathrm{.}65m)$ with a posted speed limit of $85k\frac{m}{h}.$ Some parts of the road are flat, and the horizontal alignment of the curve is designed based on an angle of $75,$ length of the curve is $400m,$ side friction is $0\mathrm{.}12$ and elevation is $0\mathrm{.}05.$ It is reported that there are numerous accidents occurring on the road segment and the road user mentioned that the gazette speed limit is not suitable, and it is the major cause of the accident. As a road engineer, you are required to do the evaluation on the road geometric condition $($show all the steps$)$ and comment on the suitability of the horizontal alignment. Based on your findings, what is the cause of the accident, is it the driver fault or otherwise? Recommend the appropriate solutions for this study.