|
Figure 3B-11. Examples of Extensions through Intersections (Sheet
2 of 2)
This figure illustrates four examples of extensions through intersections
or interchanges, (a), (b), (c), and (d). The figure is composed
of two sheets.
- Sheet 2 of the figure shows two highway intersections, examples
(c) and (d). A legend shows a black arrow indicating the direction
of travel in the lanes and an asterisk denoting "optional":
- The third example is labeled "c - Typical dotted line markings
to extend longitudinal lane line markings." A note states
"Lane line extensions may be dotted or solid lines":
- This figure shows the intersection of a five-lane horizontal
roadway with a three-lane horizontal roadway. Arrows show
that the direction of travel is two lanes eastbound and two
lanes westbound with opposing center turn lanes on the horizontal
roadway, and one lane northbound and one lane southbound with
opposing center turn lanes on the vertical roadway.
- The horizontal roadway is composed of two through lanes
in each direction and a center left turn lane. The vertical
roadway is composed of one through lane in each direction
and a center turn lane. On both roadways, the through lanes
are divided from each other by a broken white line. The left
turn lane is divided from the same direction through lanes
by a solid white line. The beginning of the left turn lane
is shown by a solid double yellow line that angles from the
broken white line to the solid double yellow line that separates
the turn lane from the oncoming lanes. White turn arrows are
marked in the turn lanes. Asterisks denote these turn arrows
as optional. A solid white stop line is marked across all
approach lanes at the intersection.
- Beginning at the crosswalk on the north side of the vertical
highway, a dotted white line extends from the solid white
line separating the right lane from the left-turn lane through
the intersection, curving 90 degrees to the east and is omitted
inside the east side crosswalk, to join the lane line that
separates the two eastbound lanes of the eastbound roadway
on the east side of the intersection. Beginning at the crosswalk
on the south side of the vertical highway, another dotted
white line extends from the solid white line separating the
right lane from the left-turn lane through the intersection,
curving 90 degrees to the west and is omitted inside the west
side crosswalk, to join the lane line that separates the two
westbound lanes on the westbound roadway on the west side
of the intersection.
- On each side of the intersection on each roadway are two
parallel solid white lines denoting crosswalks.
- The fourth example is labeled "d - Typical dotted line
markings to extend longitudinal center line markings."
- This figure shows an intersection similar to that shown
as example (c), with a five-lane horizontal roadway intersecting
a three-lane vertical roadway. Arrows show that the direction
of travel is two lanes eastbound and two lanes westbound with
opposing center turn lanes on the horizontal roadway, and
one lane northbound and one lane southbound with opposing
center turn lanes on the vertical roadway. On both roadways,
the through lanes in the same direction are divided from each
other by a broken white line. The left turn lane is divided
from the same direction through lanes by a solid white line.
The beginning of the left turn lane is shown by a solid double
yellow line that angles from the broken white line to the
solid double yellow line that separates the turn lane from
the oncoming lanes. White turn arrows are marked in the turn
lanes. Asterisks denote these turn arrows as optional. A solid
white stop line is marked across all approach lanes at the
intersection.
- On the east side of the intersection, a separate westbound
right-turn lane is shown as the rightmost lane. It is separated
from the right through lane by a solid white line that forms
a gore at the intersection as the turn lane begins to curve
to the north. At the point where the right-turn lane curves
past the northeast corner of the intersection, two parallel
solid white lines denoting a crosswalk are shown across the
turn lane. A black triangular island is shown to the left
of the crosswalk with the point of the island extending to
the far edge of the vertical and horizontal crosswalks in
the intersection. The right-turn lane continues curving and
merges with the northbound lane of the vertical roadway on
the north side of the intersection.
- Beginning at the crosswalk on the north side of the vertical
roadway, a single dotted yellow line extends from the solid
double yellow line separating the left-turn lane from the
opposing through lane through the intersection, curving 90
degrees to the east and is omitted inside the east side crosswalk,
to join the solid double yellow line that separates the left-turn
lane from the two eastbound lanes on the east side of the
intersection. Beginning at the crosswalk on the south side
of the vertical highway, another single dotted yellow line
extends from the solid double yellow line separating the left-turn
lane from the opposing through lane through the intersection,
curving 90 degrees to the west and is omitted inside the west
side crosswalk, to join the solid double yellow line that
separates the left-turn lane from the two westbound lanes
on the west side of the intersection.
- On each side of the intersection on each roadway are two
parallel solid white lines denoting crosswalks.
Back to: Sheet 1
Back
to Chapter 3B
|
