Customized version of http://www.thingiverse.com/thing:615256

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=615256

Using the following options:

curve_stud_rows = 4
roadway_width = 6
dual_sided = no
roadway_y = 1
roadway_x = 4
roadway_length = 3
slope_end_height = 0
stud_type = hollow
wing_end_width = 2
slope_stud_rows = 1
block_brand = lego
block_height_ratio = 4
block_type = curve
curve_type = convex
wing_base_length = 3
use_reinforcement = no
vertical_axle_holes = no
technic_holes = no
block_width = 8
stud_rescale = 1
wing_stud_notches = yes
wing_type = full
curve_end_height = 0
block_length = 8