BSicon/Catalogue/parallel junctions

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Single to double[edit]

e x ex t et xt ext u ue ux uex ut uet uxt uext
SPLa e x ex t   xt ext u ue ux uex ut uet uxt uext single to double
mSPLa     x           u ue             single to double, mixed
vSHI2gl- e x ex t et xt ext u ue ux uex ut uet uxt uext right only to double
v-SHI2gr e x ex t et xt ext u ue ux uex ut uet uxt uext left only to double
vSTRag+r     ex                         single & from right to double
vSTRag+xr e x ex                         single & from unused right to double
vSTRag+lr                               single & from right & left to double
vSTRag+xlr                               single & from unused right & left to double
vSTRag+l     ex                         single & from left to double
vSTRag+xl   x ex                         single & from unused left to double
vJCTgo+r                         ut       single & from right to both, over
vJCTgu+r                         ut       single & from right to both, under
vJCTgo+l                         ut       single & from left to both, over
vJCTgu+l                         ut       single & from left to both, under
SPLa+r e x ex         u     uex ut       right to double
SPLa+l e x ex         u     uex         left to double
vABZq+rl     ex         u     uex         across & right to right & left to left
vABZq+rxl               u               across & right to right & left to left
SPLa+r+g               u               single to left through & from right to double
SPLa+r+xg     ex         u     uex         unused single to left through & from right to double
SPLa+l+g               u               single to right through & from left to double
SPLa+l+xg     ex         u     uex         unused single to right through & from left to double
vSTR+r-STR+l e x ex t       u ue ux uex ut       double from right & left
vABZ+ra-STR+la                              
vSTR+r-ABZ+la                              
SHI4l+vSHI1+l-SHI2+lo                               (should be KRW, not ÜW)
e x ex t et xt ext u ue ux uex ut uet uxt uext

Double to single[edit]

e x ex t et xt ext u ue ux uex ut uet uxt uext
SPLe e x ex t   xt ext u ue ux uex ut uet uxt uext double to single
mSPLe   x           u   ux           double to single, mixed
vSHI2g+l- e x ex t et xt ext u ue ux uex ut uet uxt uext double to right only
v-SHI2g+r e x ex t et xt ext u ue ux uex ut uet uxt uext double to left only
vSTRegr e x ex                         double to single & right
vSTRegxr e   ex                         double to single & unused right
vSTReglr                               double to single & right & left
vSTRegxlr                               double to single & unused right & left
vSTRegl e   ex         u               double to single & left
vSTRegxl   x ex                         double to single & unused left
vJCTgor                         ut       both to single & right, over
vJCTgur                         ut       both to single & right, under
vJCTgol                         ut       both to single & left, over
vJCTgul                 u       ut       both to single & left, under
SPLer e x ex       ext u ue ux uex ut     uext double to right
SPLel e x ex         u ue ux uex         double to left
vABZqrl     ex         u     uex         across & right to right & left to left
SPLer+g               u               double to right & single to left through
SPLer+xg   x ex         u               double to right & unused single to left through
SPLel+g   x           u               double to left & single to right through
SPLel+xg     ex         u     uex         double to left & unused single to right through
vSTRr-STRl e x ex t       u ue ux uex ut       double to right & left
vABZr-STRle                              
vSTRr-ABZle                              
e x ex t et xt ext u ue ux uex ut uet uxt uext

Double to double + single branch[edit]

ex t ext u uex ut uext
vSTR-ABZg+l ex t   u uex ut   left through & from left
vSTR-ABZgl ex t   u uex ut   left forward & left
vABZgr-STR ex t ext u uex ut   right forward & right
vABZg+r-STR ex t   u uex ut   right through & from right
vSTR-ABZg+1 ex     u uex     from corner 1 junction with left line
vSTR-ABZg2 ex     u uex     from corner 2 junction with left line
vABZg3-STR ex     u uex     from corner 3 junction with right line
vABZg+4-STR ex     u uex     from corner 4 junction with right line
vABZr+r-SHI2gr               right to right & from right; left through and to right forward
vABZr+r-SHI2g+r               right to right & left through: right from right
vSHI2gl-ABZl+l               right through & to left forward; left to left & from left
vSHI2g+l-ABZl+l               right through, left to left & right through; left from left
vSTR+r-SHI2g+r              
vSHI2gl-STRl              
vSHI2g+l-STR+l              
vSTRr-SHI2gr              
ex t ext u uex ut uext

Heavy Rail / Light Rail[edit]

ID
all in use through lines in use, connection unused through lines unused, connection in use left and connection in use, right unused right and connection in use, left unused left and connection unused, right in use right and connection unused, left in use all unused
junctions to and from the right
ABZgr-STR BSicon vABZgr-STR.svg BSicon uvABZgr-STR.svg
vABZgr-STR

veABZgr-STR

vxABZgr-exSTR

vABZgr-exSTR

vxABZgr-STR

vexABZgr-STR

veABZgr-exSTR
BSicon exvABZgr-STR.svg BSicon uexvABZgr-STR.svg
exvABZgr-STR
KRZr-ABZgr
vABZgr-ABZgr

veABZgr-eABZgr

veABZgr-exABZgr

exvABZgr-ABZgr
KRZ-ABZgr
vSTR-ABZgr

vSTR-eABZgr

vexSTR-xABZgr

vSTR-xABZgr

vexSTR-ABZgr

vexSTR-eABZgr

vSTR-exABZgr

exvSTR-ABZgr
KRZu-ABZgr
vSTR-ABZgro

vSTR-eABZgro

vexSTR-ABZgro

vexSTR-eABZgro

vSTR-exABZgro

exvSTR-ABZgro
KRZo-ABZgr
vSTRo-ABZgr

vSTRo-eABZgr

vexSTRo-ABZgr

vexSTRo-eABZgr

vSTRo-exABZgr

exvSTRo-ABZgr
ABZg+r-STR BSicon vABZg+r-STR.svg BSicon uvABZg+r-STR.svg
vABZg+r-STR

veABZg+r-STR

vxABZg+r-exSTR

vABZg+r-exSTR

vxABZg+r-STR

vexABZg+r-STR

veABZg+r-exSTR
BSicon exvABZg+r-STR.svg BSicon uexvABZg+r-STR.svg
exvABZg+r-STR
KRZ-ABZg+r
vSTR-ABZg+r

vSTR-eABZg+r

vexSTR-xABZg+r

vSTR-xABZg+r

vexSTR-ABZg+r

vexSTR-eABZg+r

vSTR-exABZg+r

exvSTR-ABZg+r
KRZ+r-ABZg+r
vABZg+r-ABZg+r

veABZg+r-eABZg+r

veABZg+r-exABZg+r

exvABZg+r-ABZg+r
KRZu-ABZg+r
vSTR-ABZg+ro

vSTR-eABZg+ro

vexSTR-ABZg+ro

vexSTR-eABZg+ro

vSTR-exABZg+ro

exvSTR-ABZg+ro
KRZo-ABZg+r BSicon vSTRo-ABZg+r.svg BSicon uvSTRo-ABZg+r.svg
vKRZo-ABZg+r

vSTRo-eABZg+r

vexSTRo-ABZg+r

vexSTRo-eABZg+r

vSTRo-exABZg+r

exvSTRo-ABZg+r
ABZgr+r-STR
vABZgr+r-STR

veABZgr+r-STR

vxABZgr+r-exSTR

exvABZgr+r-STR
KRZ-ABZgr+r
vSTR-ABZgr+r

vSTR-eABZgr+r

vexSTR-xABZgr+r

exvSTR-ABZgr+r
junctions to and from the left
STR-ABZgl BSicon vSTR-ABZgl.svg BSicon uvSTR-ABZgl.svg
vSTR-ABZgl

vSTR-eABZgl

vexSTR-xABZgl

vSTR-xABZgl

vexSTR-ABZgl

vexSTR-eABZgl

vSTR-exABZgl
BSicon exvSTR-ABZgl.svg BSicon uexvSTR-ABZgl.svg
exvSTR-ABZgl
ABZgl-KRZ
vABZgl-STR

veABZgl-STR

vxABZgl-exSTR

vABZgl-exSTR

vxABZgl-STR

vexABZgl-STR

veABZgl-exSTR

exvABZgl-STR
ABZgl-KRZl
vABZgl-ABZgl

veABZgl-eABZgl

vexABZgl-eABZgl

exvABZgl-ABZgl
ABZgl-KRZu
vABZglo-STR

veABZglo-STR

vABZglo-exSTR

vexABZglo-STR

veABZglo-exSTR

exvABZglo-STR
ABZgl-KRZo BSicon vABZgl-STRo.svg BSicon uvABZgl-STRo.svg
vABZgl-KRZo

veABZgl-STRo

vxABZgl-exSTRo

vABZgl-exSTRo

vxABZgl-STRo

vexABZgl-STRo

veABZgl-exSTRo

exvABZgl-STRo
STR-ABZg+l BSicon vSTR-ABZg+l.svg BSicon uvSTR-ABZg+l.svg
vSTR-ABZg+l

vSTR-eABZg+l

vexSTR-xABZg+l

vSTR-xABZg+l

vexSTR-ABZg+l

vexSTR-eABZg+l

vSTR-exABZg+l
BSicon exvSTR-ABZg+l.svg BSicon uexvSTR-ABZg+l.svg
exvSTR-ABZg+l
ABZg+l-KRZ
vABZg+l-STR

veABZg+l-STR

vxABZg+l-exSTR

vABZg+l-exSTR

vxABZg+l-STR

vexABZg+l-STR

veABZg+l-exSTR

exvABZg+l-STR
ABZg+l-KRZ+l
vABZg+l-ABZg+l

veABZg+l-eABZg+l

vexABZg+l-eABZg+l

exvABZg+l-ABZg+l
ABZg+l-KRZu
vABZg+lo-STR

veABZg+lo-STR

vABZg+lo-exSTR

vexABZg+lo-STR

veABZg+lo-exSTR

exvABZg+lo-STR
ABZg+l-KRZo
vABZg+l-STRo

veABZg+l-STRo

vxABZg+l-exSTRo

vABZg+l-exSTRo

vxABZg+l-STRo

vexABZg+l-STRo

veABZg+l-exSTRo

exvABZg+l-STRo
STR-ABZgl+l
vSTR-ABZgl+l

vSTR-eABZgl+l

vexSTR-xABZgl+l

vexSTR-ABZgl+l

exvSTR-ABZgl+l
ABZgl+l-KRZ
vABZgl+l-STR

veABZgl+l-STR

vxABZgl+l-exSTR

exvABZgl+l-STR
junctions to and from the right & left
ABZr+r-STR
vABZr+r-STR

vexABZr+r-STR

vABZr+r-exSTR

vABZxr+r-STR

vABZr+xr-STR

vABZxr+r-exSTR

vABZr+xr-exSTR

exvABZr+r-STR
STR-ABZl+l
vSTR-ABZl+l

vSTR-exABZl+l

vexSTR-ABZl+l

vSTR-ABZxl+l

vSTR-ABZl+xl

vexSTR-ABZxl+l

vexSTR-ABZl+xl

exvSTR-ABZl+l
ABZgr-ABZgl
vABZgr-ABZgl
ABZg+r-ABZg+l
vABZg+r-ABZg+l
ABZgr-ABZg+l
vABZgr-ABZg+l
ABZg+r-ABZgl
vABZg+r-ABZgl

Mixed[edit]

ID
all in use through lines in use, connection unused through lines unused, connection in use left and connection in use, right unused right and connection in use, left unused left and connection unused, right in use right and connection unused, left in use all unused
junctions to and from the right
ABZgr-STR BSicon veABZgr-uSTR.svg
veABZgr-uSTR
KRWgr-STR BSicon veKRWgr-uSTR.svg
veKRWgr-uSTR
KRZo-ABZgr BSicon uvemKRZo-eABZgmr.svg
uvemKRZo-eABZgmr
ABZg+r-STR BSicon vABZg+r-uSTR.svg
vABZg+r-uSTR
KRZ-ABZgr BSicon vKRZ-uABZg+r.svg
vKRZ-uABZg+r
KRZu-ABZgr BSicon vKRZu-uABZg+r.svg
vKRZu-uABZg+r
KRZo-ABZgr BSicon uvemKRZo-eABZg+mr.svg
uvemKRZo-eABZg+mr
ABZr+r-STR BSicon vABZr+r-uSTR.svg
vABZr+r-uSTR
junctions to and from the left
STR-ABZgl BSicon vSTR-uABZgl.svg
vSTR-uABZgl
BSicon uvSTR-eABZgml.svg
uvSTR-eABZgml

Double to double + double branch[edit]

e x ex t et xt ext u ue ux uex ut uet uxt uext
vABZgl                               Forward and to left
vABZgr                               Forward and to right
vABZg+l                               Forward and from left
vABZg+r                               Forward and from right
vABZqlr                 u     uex         Wye up
vABZq+lr                 u     uex         Wye down
vABZgl+l                 u     uex         Wye to the left
vABZgr+r               u     uex         Wye to the right
vKRZlr+lr                 u     uex         4-way junction
vSTRl+r                 u     uex         opposite curves (for use as overlay to provide 3rd corner)
vSTRr+l                 u     uex         opposite curves (for use as overlay to provide 3rd corner)
e x ex t et xt ext u ue ux uex ut uet uxt uext

Parallel lines across[edit]

Double to one side[edit]

e x ex t et xt ext u ue ux uex ut uet uxt uext
SPLaq     ex         u     uex         single to double, across
SPLeq     ex         u     uex         double to single, across
SHI2grq- e x ex         u ue ux uex         single to double, upper line
SHI2g+rq- e x ex         u ue ux uex         double to single, upper line
-SHI2glq e x ex         u ue ux uex         single to double, lower line
-SHI2g+lq e x ex         u ue ux uex         double to single, lower line
SPLal     ex         u     uex         single to double, to left
dSPLal     ex         u     uex         single to double, to left half width
vSPLal- e x ex         u ue ux uex         single to double, to left from right parallel line
mvSPLal-     x                           single to double, to left from right parallel line, mixed
v-SPLal e x ex         u ue ux uex         single to double, to left from left parallel line
SPLe+l     ex         u     uex         double to single, from left
SPLar     ex         u     uex         single to double, to right
dSPLar e x ex         u ue ux uex         single to double, to right half width
vSPLar- e x ex         u ue ux uex         single to double, to right from right parallel line
v-SPLar e x ex         u ue ux uex         single to double, to right from left parallel line
mv-SPLar     x             ue             single to double, to right from left parallel line, mixed
SPLe+r     ex         u     uex         double to single, from right
e x ex t et xt ext u ue ux uex ut uet uxt uext

45° at corners[edit]

  e x ex t et xt ext u ue ux uex ut uet uxt uext

Single line

vABZg+1- vABZg+1- evABZg+1- xvABZg+1- exvABZg+1-         uvABZg+1- uevABZg+1- uxvABZg+1- uexvABZg+1- utvABZg+1-       from corner 1 junction with right line
vABZg2- vABZg2- evABZg2- xvABZg2- exvABZg2-         uvABZg2- uevABZg2- uxvABZg2- uexvABZg2-         to corner 2 junction with right line
vABZg3- vABZg3- evABZg3- xvABZg3- exvABZg3-         uvABZg3- uevABZg3- uxvABZg3- uexvABZg3-         to corner 3 junction with right line
vABZg+4- vABZg+4- evABZg+4- xvABZg+4- exvABZg+4-         uvABZg+4- uevABZg+4- uxvABZg+4- uexvABZg+4-         from corner 4 junction with right line
v-ABZg+1 v-ABZg+1 ev-ABZg+1 xv-ABZg+1 exv-ABZg+1         uv-ABZg+1 uev-ABZg+1 uxv-ABZg+1 uexv-ABZg+1         from corner 1 junction with left line
v-ABZg2 v-ABZg2 ev-ABZg2 xv-ABZg2 exv-ABZg2         uv-ABZg2 uev-ABZg2 uxv-ABZg2 uexv-ABZg2         to corner 2 junction with left line
v-ABZg3 v-ABZg3 ev-ABZg3 xv-ABZg3 exv-ABZg3         uv-ABZg3 uev-ABZg3 uxv-ABZg3 uexv-ABZg3         to corner 3 junction with left line
v-ABZg+4 v-ABZg+4 ev-ABZg+4 xv-ABZg+4 exv-ABZg+4         uv-ABZg+4 uev-ABZg+4 uxv-ABZg+4 uexv-ABZg+4 utv-ABZg+4 uetv-ABZg+4 uxtv-ABZg+4 uextv-ABZg+4 from corner 4 junction with left line

Single to double & double to single

SPL+1 SPL+1 eSPL+1 xSPL+1 exSPL+1 tSPL+1     extSPL+1 uSPL+1 ueSPL+1 uxSPL+1 uexSPL+1 utSPL+1     uextSPL+1 from corner 1 single to double
SPLg+2 SPLg+2 eSPLg+2 xSPLg+2 exSPLg+2 tSPLg+2     extSPLg+2 uSPLg+2 ueSPLg+2 uxSPLg+2 uexSPLg+2 utSPLg+2     uextSPLg+2 to corner 2 double to single
SPLg+3 SPLg+3 eSPLg+3 xSPLg+3 exSPLg+3 tSPLg+3     extSPLg+3 uSPLg+3 ueSPLg+3 uxSPLg+3 uexSPLg+3 utSPLg+3     uextSPLg+3 to corner 3 double to single
SPL+4 SPL+4 eSPL+4 xSPL+4 exSPL+4 tSPL+4     extSPL+4 uSPL+4 ueSPL+4 uxSPL+4 uexSPL+4 utSPL+4     uextSPL+4 from corner 4 single to double
SPLr+1 SPLr+1 eSPLr+1 xSPLr+1 exSPLr+1         uSPLr+1 ueSPLr+1 uxSPLr+1 uexSPLr+1         to right from corner 1 single to double
SPLr+2 SPLr+2 eSPLr+2 xSPLr+2 exSPLr+2         uSPLr+2 ueSPLr+2 uxSPLr+2 uexSPLr+2         to corner 2 from right double to single
SPLl+3 SPLl+3 eSPLl+3 xSPLl+3 exSPLl+3         uSPLl+3 ueSPLl+3 uxSPLl+3 uexSPLl+3         to corner 3 from left double to single
SPLl+4 SPLl+4 eSPLl+4 xSPLl+4 exSPLl+4         uSPLl+4 ueSPLl+4 uxSPLl+4 uexSPLl+4         to left from corner 4 single to double
SPL1+f SPL1+f eSPL1+f xSPL1+f exSPL1+f         uSPL1+f ueSPL1+f uxSPL1+f uexSPL1+f         from corner 1 double to single
SPL1+f~l SPL1+f~l     exSPL1+f~l tSPL1+f~l     extSPL1+f~l uSPL1+f~l     uexSPL1+f~l utSPL1+f~l     uextSPL1+f~l from corner 1 double to single, left line only
SPL1+f~r SPL1+f~r     exSPL1+f~r         uSPL1+f~r     uexSPL1+f~r         from corner 1 double to single, right line only
SPL2 SPL2 eSPL2 xSPL2 exSPL2         uSPL2 ueSPL2 uxSPL2 uexSPL2         to corner 2 single to double
SPL2~l SPL2~l     exSPL2~l tSPL2~l     extSPL2~l uSPL2~l     uexSPL2~l utSPL2~l     uextSPL2~l to corner 2 single to double, left line only
SPL2~r SPL2~r     exSPL2~r         uSPL2~r     uexSPL2~r         to corner 2 single to double, right line only
SPL3 SPL3 eSPL3 xSPL3 exSPL3         uSPL3 ueSPL3 uxSPL3 uexSPL3         to corner 3 single to double
SPL3~l SPL3~l     exSPL3~l         uSPL3~l     uexSPL3~l         to corner 3 single to double, left line only
SPL3~r SPL3~r     exSPL3~r tSPL3~r     extSPL3~r uSPL3~r     uexSPL3~r utSPL3~r     uextSPL3~r to corner 3 single to double, right line only
SPL4+f SPL4+f eSPL4+f xSPL4+f exSPL4+f         uSPL4+f ueSPL4+f uxSPL4+f uexSPL4+f         from corner 4 double to single
SPL4+f~l SPL4+f~l     exSPL4+f~l         uSPL4+f~l     uexSPL4+f~l         from corner 4 double to single, left line only
SPL4+f~r SPL4+f~r     exSPL4+f~r tSPL4+f~r     extSPL4+f~r uSPL4+f~r     uexSPL4+f~r utSPL4+f~r     uextSPL4+f~r from corner 4 double to single, right line only
SPL1+r SPL1+r                               to right from corner 1 double to single
SPL2+r SPL2+r                               to corner 2 from right single to double
SPL3+l SPL3+l                               to corner 3 from left single to double
SPL4+l SPL4+l               uSPL4+l               to left from corner 4 double to single
SPL3+1 SPL3+1                               to corner 3 from 1st single to double
SPL1+3 SPL1+3                               to corner 3 from 1st double to single
SPL2+4 SPL2+4                               to corner 2 from 4th single to double
SPL4+2 SPL4+2                               to corner 2 from 4th double to single
SPL2+1 SPL2+1                               to corner 2 from 1st single to double
vSPL1+f~l vSPL1+f~l     exvSPL1+f~l         uvSPL1+f~l     uexvSPL1+f~l        
vSPL1+f~r vSPL1+f~r     exvSPL1+f~r         uvSPL1+f~r     uexvSPL1+f~r        
vSPL1+f~l~l vSPL1+f~l~l     exvSPL1+f~l~l         uvSPL1+f~l~l     uexvSPL1+f~l~l        
vSPL1+f~r~r vSPL1+f~r~r     exvSPL1+f~r~r         uvSPL1+f~r~r     uexvSPL1+f~r~r        
vSPL2~l vSPL2~l     exvSPL2~l         uvSPL2~l     uexvSPL2~l        
vSPL2~r vSPL2~r     exvSPL2~r         uvSPL2~r     uexvSPL2~r        
vSPL2~l~l vSPL2~l~l     exvSPL2~l~l         uvSPL2~l~l     uexvSPL2~l~l        
vSPL2~r~r vSPL2~r~r     exvSPL2~r~r         uvSPL2~r~r     uexvSPL2~r~r        
vSPL3~l vSPL3~l     exvSPL3~l         uvSPL3~l     uexvSPL3~l        
vSPL3~r vSPL3~r     exvSPL3~r         uvSPL3~r     uexvSPL3~r        
vSPL3~l~l vSPL3~l~l     exvSPL3~l~l         uvSPL3~l~l     uexvSPL3~l~l        
vSPL3~r~r vSPL3~r~r     exvSPL3~r~r         uvSPL3~r~r     uexvSPL3~r~r        
vSPL4+f~l vSPL4+f~l     exvSPL4+f~l         uvSPL4+f~l     uexvSPL4+f~l        
vSPL4+f~r vSPL4+f~r     exvSPL4+f~r         uvSPL4+f~r     uexvSPL4+f~r        
vSPL4+f~l~l vSPL4+f~l~l     exvSPL4+f~l~l         uvSPL4+f~l~l     uexvSPL4+f~l~l        
vSPL4+f~r~r vSPL4+f~r~r     exvSPL4+f~r~r         uvSPL4+f~r~r     uexvSPL4+f~r~r        
vSPL1+r~l vSPL1+r~l     exvSPL1+r~l         uvSPL1+r~l     uexvSPL1+r~l        
vSPL1+r~r vSPL1+r~r     exvSPL1+r~r         uvSPL1+r~r     uexvSPL1+r~r        
vSPL1+r~l~l vSPL1+r~l~l     exvSPL1+r~l~l         uvSPL1+r~l~l     uexvSPL1+r~l~l        
vSPL1+r~r~r vSPL1+r~r~r     exvSPL1+r~r~r         uvSPL1+r~r~r     uexvSPL1+r~r~r        
vSPL2+r~l vSPL2+r~l     exvSPL2+r~l         uvSPL2+r~l     uexvSPL2+r~l        
vSPL2+r~r vSPL2+r~r     exvSPL2+r~r         uvSPL2+r~r     uexvSPL2+r~r        
vSPL2+r~l~l vSPL2+r~l~l     exvSPL2+r~l~l         uvSPL2+r~l~l     uexvSPL2+r~l~l        
vSPL2+r~r~r vSPL2+r~r~r     exvSPL2+r~r~r         uvSPL2+r~r~r     uexvSPL2+r~r~r        
vSPL3+l~l vSPL3+l~l     exvSPL3+l~l         uvSPL3+l~l     uexvSPL3+l~l        
vSPL3+l~r vSPL3+l~r     exvSPL3+l~r         uvSPL3+l~r     uexvSPL3+l~r        
vSPL3+l~l~l vSPL3+l~l~l     exvSPL3+l~l~l         uvSPL3+l~l~l     uexvSPL3+l~l~l        
vSPL3+l~r~r vSPL3+l~r~r     exvSPL3+l~r~r         uvSPL3+l~r~r     uexvSPL3+l~r~r        
vSPL4+l~l vSPL4+l~l     exvSPL4+l~l         uvSPL4+l~l     uexvSPL4+l~l        
vSPL4+l~r vSPL4+l~r     exvSPL4+l~r         uvSPL4+l~r     uexvSPL4+l~r        
vSPL4+l~l~l vSPL4+l~l~l     exvSPL4+l~l~l         uvSPL4+l~l~l     uexvSPL4+l~l~l        
vSPL4+l~r~r vSPL4+l~r~r     exvSPL4+l~r~r         uvSPL4+l~r~r     uexvSPL4+l~r~r        
  e x ex t et xt ext u ue ux uex ut uet uxt uext

Loops[edit]

Abbreviation is from the German Wendeschleife (literally: turning loop). Compare with the single line versions.

Loops closing parallel lines
ex t ext u uex ut uext
vWSLa ex t ext u uex ut   Loop closing start
vWSLe ex t ext u uex ut   Loop closing end
vWSLaq ex t ext u uex ut uext Loop closing across, start
dvWSLaq ex             Loop closing across, start, half width
vWSLeq ex t ext u uex ut uext Loop closing across, end
dvWSLeq                 Loop closing across, end, half width
ex t ext u uex ut uext
Looping junctions
e x ex t et xt ext u ue ux uex ut uet uxt uext
vWSLg+l               u               Single line to double to right; loop from the left
vWSLg+r               u               Single line to double to left; loop from the right
vWSLgl e x           u               Double line to single from right; loop to the left
vWSLgr e x           u               Double line to single from left; loop to the right
vWSLga e   ex         u     uex         Double line with loop forward
vWSLge e   ex         u     uex         Double line with loop backwards
e x ex t et xt ext u ue ux uex ut uet uxt uext
Passing loops
e x ex t et xt ext u ue ux uex ut uet uxt uext
ISLAND     ex         u ue ux uex         Single to double to single line
e x ex t et xt ext u ue ux uex ut uet uxt uext