A new local street network is to be designed for a new residential development in a level urban area. The right of way widths are: $15,1210,$ and $8m.$ Parking lanes are to be provided.

a$)$ Determine:

The design vehicle

The range of design speed do you recommended for use

The Min. radius $($no superelevation is designed$)$

The max. grade

The width of parking lane

b$)$ Do you recommend the use of curbs? Sidewalks? In what cases and why?

c$)$ Draw the recommended road cross sections for each ROW width showing all needed elements with dimensions.

d$)$ If you need to design a circular and squared$-$end cul$-$de$-$sac streets in the development. Determine the design variables providing proper sketches.