congestion or hazard on the highway or to provide reasonable access. The letters in the
following design features refer to features in figure 1:
(a) Intersecting angle, A, the clockwise angle from a highway centerline to a
driveway reference line which is the centerline or the edge of the driveway.
(b) Driveway width, B, the distance between driveway edges of pavement or edges
of the gravel surface measured at the point where the edges of the driveway become
parallel, point b in figure 1. If the right-of-way line is so close to the pavement that
point b falls on the applicant's property, then the width of the driveway at the right-
of-way line shall be based on the projected driveway width.
(c) Entering radius, C, the radius of a driveway edge curve on the right side of a
vehicle entering the applicant's property.
(d) Exiting radius, D, the radius of a driveway edge curve on the right side of a
vehicle leaving the applicant's property.
(e) Curb ending, E, the length of the height transition of the driveway curb from
ground level to full curb height along an uncurbed highway. This curb transition may
be 10 feet minimum.
(f) Right-turn lane length, F, the length of an auxiliary lane constructed
preceding the driveway to accommodate right-turn traffic entering the applicant's
property.
(g) Right-turn lane width, G, the width edge-to-edge of a right-turn lane, or the
width edge-to-edge at the full width of entering and exiting tapers.
(h) Entering taper, H, the length of a pavement widening, preceding the driveway
for a right-turn lane or taper.
(i) Exiting taper, J, the length of a pavement narrowing, following the driveway.
(j) Entrance drive width, K, the width of the portion of a divided or a directional
driveway that is used by a vehicle entering the applicant's property.
(k) Exit drive width, L, the width of the portion of a divided or a directional
driveway that is used by a vehicle leaving the applicant's property.
(l) Island width, M, the edge-to-edge distance between an entrance drive and an
exit drive.
(m) Island length, N, the distance between ends of the island, measured parallel to
the entrance drive.
(n) Nose offset, P, the distance between the edge of pavement and the traffic
island of a divided or directional driveway.
(o) Curb cut, R, the length of the opening along a highway curb for a straight-
sided residential driveway.
(p) Distance between driveways, S, the inside distance between 2 adjacent
driveways measured along a highway right-of-way line.
Figure for 247.233
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