breed [cars car] cars-own [new waiting turning blocked coming-from coming-to give-way started-to-turn obey wait-time old-xcor old-ycor] globals [cars-count accidents went-through avg-waiting lights-time lights-limit lights] to setup clear-all reset-ticks set cars-count 0 set accidents 0 build-roads if intersection-type = "Crossroad" [build-crossroad] if intersection-type = "Roundabout" [build-roundabout] if intersection-type = "Traffic lights" [build-lights set lights "north-south" set lights-time 0] end to go ifelse went-through < limit [tick] [stop] let max-waiting-time (random 6 + 6) ;;old cars ask cars[ set new false ;;mark previously created cars as old ] ;;new cars let probability-of-new-car-coming (random 100) * 4 ;;if set to 100, new car comes every 4 ticks if probability-of-new-car-coming < new-cars-frequency [ add-car ] if intersection-type = "Traffic lights" [set lights-time (lights-time + 1) if lights-time >= lights-limit [ ask patches with [pcolor = green] [ set pcolor orange ] ask patches with [pcolor = red] [ set pcolor yellow ] ] if lights-time >= lights-limit + yellow-length [ switch-lights ] ] ;;move cars ask cars [ if old-xcor = xcor and old-ycor = ycor [set wait-time wait-time + 1 ] set old-xcor xcor set old-ycor ycor ;;if a car reached the edge => remove the car if xcor > 31 or xcor < -31 or ycor > 31 or ycor < -31 and new = false and blocked != true [ set avg-waiting ((avg-waiting * (went-through - 1) + wait-time) / went-through) set cars-count cars-count - 1 die ] ;; if CROSSROAD if intersection-type = "Crossroad" [ ;;if stop sign----------------------------------------------------------- ifelse ([pcolor] of patch-ahead 0 = red - 1) and (waiting = 0) and obey = true [ set waiting 1 ] ;;if waiting at stop sign------------------------------------------------ [ ifelse waiting > 0 and waiting < max-waiting-time [ set waiting waiting + 1 ] [ ;;if leaving crossroad if [pcolor] of patch-ahead 0 = grey - 1 and [pcolor] of patch-ahead 1 = grey [ if turning = "left" [left 45] if turning = "right" [right 45] set give-way false ] if can-move? -1 and [pcolor] of patch-ahead -1 = grey - 1 and [pcolor] of patch-ahead 0 = grey [ set turning false set coming-from "leaving" set went-through went-through + 1 set label "leaving" ] ;;if going through crossroad----------------------------- ifelse turning = "left" or turning = "right" or turning = "straight" [ if started-to-turn != false [ set give-way give-way? coming-from turning ] if give-way != true [ if one-of other turtles-on patch-ahead 1 = nobody [ forward 1 ] set started-to-turn false ] ;go! ] [ ;;approaching the intersection, deciding which way to go----------------------------------------- if waiting = max-waiting-time or ([pcolor] of patch-ahead 1 = grey - 1 and ([pcolor] of patch-ahead 0 = grey or [pcolor] of patch-ahead 0 = red - 1)) [ set waiting 0 ;;go forward 1 extra patch to enter the intersection forward 1 ;;decide which way to go if turn? coming-from coming-to = 1 [ left 45 set turning "left" ] if turn? coming-from coming-to = 2 [ right 45 set turning "right" ] if turn? coming-from coming-to = 3 [ set turning "straight" ] set started-to-turn true set give-way give-way? coming-from turning ] ;;wait if there is a car ahead---------------------------------------- ifelse can-move? 4 [ let car-ahead one-of turtles-on patch-ahead 4 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 3 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 2 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 1 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self) ;if there is a car directly in front, driver breaks! [ set blocked false if give-way != true [ forward 1 set started-to-turn false ] ;go! ] [ set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [ set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [ set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [ set blocked true ;there is a car in front of this car ] ] [ forward 1 ;;to reach the end of the world ] ] ] ] ] ;; if ROUNDABOUT if intersection-type = "Roundabout" [ if give-way != true and blocked != true [ forward 1 ] ;;going round roundabout, steering left if [pcolor] of patch-ahead 0 = grey - 1 and blocked != true and (pxcor = 5 or pxcor = -5 or pycor = 5 or pycor = -5) [ if started-to-turn != true [ ;;decide to leave the roundabout, go straight if not --------- if (coming-to = "S" and (xcor > 0 or ycor > 0)) or (coming-to = "E" and (xcor < 0 or ycor > 0)) or (coming-to = "N" and (xcor < 0 or ycor < 0)) or (coming-to = "W" and (xcor > 0 or ycor < 0)) or [pcolor] of patch-ahead (roundabout-radius - 6) = black [ left 45 ;;turn ] forward 1 ;; cross the xy = +-5 line ] set started-to-turn false ] ;;entering or leaving the roundabout, turning right ifelse can-move? 1 = true and blocked != true and (([pcolor] of patch-ahead 0 = grey - 1 and [pcolor] of patch-ahead -1 = grey and started-to-turn != true) or ([pcolor] of patch-ahead 1 = grey and [pcolor] of patch-ahead 0 = grey - 1)) [ right 45 ;;setting labels, distinguishing between entrance and exit ifelse [pcolor] of patch-ahead 0 = grey - 1 and [pcolor] of patch-ahead -1 = grey ;;entering [ set started-to-turn true if coming-from = "S" [set coming-from "south"] if coming-from = "N" [set coming-from "north"] if coming-from = "E" [set coming-from "east"] if coming-from = "W" [set coming-from "west"] ;;give way? if coming-from = "south" and one-of turtles with [xcor < (time-gap / 2) and ycor < 2 and xcor > ( - roundabout-radius - 2) and coming-to != "S" and give-way != true] != nobody [set give-way true] if coming-from = "east" and one-of turtles with [xcor > -2 and ycor < (time-gap / 2) and ycor > ( - roundabout-radius - 2) and coming-to != "E" and give-way != true] != nobody [set give-way true] if coming-from = "north" and one-of turtles with [xcor > (- time-gap / 2) and ycor > -2 and xcor < (roundabout-radius + 2) and coming-to != "N" and give-way != true] != nobody [set give-way true] if coming-from = "west" and one-of turtles with [xcor < 2 and ycor > (- time-gap / 2) and ycor < (roundabout-radius + 2) and coming-to != "W" and give-way != true] != nobody [set give-way true] if obey = false [set give-way false] ] [ ;; leaving set label "leaving" set coming-from "leaving" set went-through went-through + 1 ] ] [ if started-to-turn = true and give-way = true [ set give-way false if coming-from = "south" and one-of turtles with [xcor < (time-gap / 2) and ycor < 2 and xcor > ( - roundabout-radius - 2) and coming-to != "S" and give-way != true] != nobody [set give-way true] if coming-from = "east" and one-of turtles with [xcor > -2 and ycor < (time-gap / 2) and ycor > ( - roundabout-radius - 2) and coming-to != "E" and give-way != true] != nobody [set give-way true] if coming-from = "north" and one-of turtles with [xcor > (- time-gap / 2) and ycor > -2 and xcor < (roundabout-radius + 2) and coming-to != "N" and give-way != true] != nobody [set give-way true] if coming-from = "west" and one-of turtles with [xcor < 2 and ycor > (- time-gap / 2) and ycor < (roundabout-radius + 2) and coming-to != "W" and give-way != true] != nobody [set give-way true] if obey = false [set give-way false] ] ] ;;wait if there is a car ahead---------------------------------------- if can-move? 4 [ set blocked true ;there is a car in front of this car - WAIT! let car-ahead one-of turtles-on patch-ahead 4 if car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 3 if car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 2 if car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of other turtles-on patch-ahead 1 if car-ahead = nobody or ([heading] of car-ahead != [heading] of self) ;if there is a car directly in front, driver breaks! [ set car-ahead one-of other turtles-on patch-right-and-ahead 15 3 if car-ahead = nobody or ([heading] of car-ahead != [heading] of self + 45) ;if there is a car directly in front, driver breaks! [ set blocked false ] ] ] ] ] ] ] ;;if Traffic lights if intersection-type = "Traffic lights" [ ifelse [pcolor] of patch-ahead 0 = red or [pcolor] of patch-ahead 1 = red or [pcolor] of patch-ahead 0 = orange [set waiting 1] ;;if waiting at stop sign------------------------------------------------ [ifelse waiting > 0 and waiting < max-waiting-time [set waiting waiting + 1] [;;if leaving crossroad if [pcolor] of patch-ahead 0 = grey - 1 and [pcolor] of patch-ahead 1 = grey [if turning = "left" [left 45] if turning = "right" [right 45] set give-way false ] if can-move? -1 and [pcolor] of patch-ahead -1 = grey - 1 and [pcolor] of patch-ahead 0 = grey [ set turning false set coming-from "leaving" set went-through went-through + 1 set label "leaving" ] ;;if going through crossroad----------------------------- ifelse turning = "left" or turning = "right" or turning = "straight" [if started-to-turn != false [set give-way give-way? coming-from turning] if give-way != true [ if one-of other turtles-on patch-ahead 1 = nobody [forward 1] set started-to-turn false ] ;go! ] [ ;;approaching the intersection, deciding which way to go----------------------------------------- if [pcolor] of patch-ahead 1 = grey - 1 and [pcolor] of patch-ahead -1 = grey [ set waiting 0 ;;go forward 1 extra patch to enter the intersection forward 1 ;;decide which way to go if turn? coming-from coming-to = 1 [ left 45 set turning "left" ] if turn? coming-from coming-to = 2 [ right 45 set turning "right" ] if turn? coming-from coming-to = 3 [ set turning "straight" ] set started-to-turn true set give-way give-way? coming-from turning ] ;;wait if there is a car ahead---------------------------------------- ifelse can-move? 4 [ let car-ahead one-of turtles-on patch-ahead 4 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 3 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 2 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self and [give-way] of car-ahead != true) [ set car-ahead one-of turtles-on patch-ahead 1 ifelse car-ahead = nobody or ([heading] of car-ahead != [heading] of self) ;if there is a car directly in front, driver breaks! [ set blocked false if give-way != true [ forward 1 set started-to-turn false ] ;go! ] [set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [set blocked true ;there is a car in front of this car ] ] ;; otherwise wait [set blocked true ;there is a car in front of this car ] ] [ forward 1 ;;to reach the end of the world ] ] ] ] ] ;;ALL if color = green - 2 [ set cars-count cars-count - 1 die ] if count other turtles-on neighbors with [pcolor = grey - 1] > 0 [ let temp coming-from if color != green - 2 [ let crash false ask other turtles-on neighbors [if coming-from != temp [set color green - 2 set crash true] ] if crash = true [set color green - 2 set accidents accidents + 1] ] ] ] end to switch-lights if lights = "north-south" [ set lights "east-west" draw-lights green red set lights-time 0 set lights-limit green-length-west-east stop ] if lights = "east-west" [ set lights "north-south" draw-lights red green set lights-time 0 set lights-limit green-length-north-south stop ] end to draw-lights [ east-west north-south ] ask patches ;; east-west [if pxcor = 5 and pycor >= 0 and pycor < 5 [set pcolor east-west] if pxcor = -5 and pycor <= 0 and pycor > -5 [set pcolor east-west] ;; north-south if pycor = 5 and pxcor <= 0 and pxcor > -5 [set pcolor north-south] if pycor = -5 and pxcor >= 0 and pxcor < 5 [set pcolor north-south] ] end to-report give-way? [from to-where] ;;GIVE WAY!!--------------------------------------------------- let result false ;;ALL------------------------ ;let cars turning to the left leave first if one-of turtles with [turning = "left" and started-to-turn = false] != nobody [ set result true ] ;;SOUTH---------------------------- if from = "S" [ if to-where = "left" and one-of turtles with [coming-from = "N" and ycor < (time-gap * 4)] != nobody [ set result true ;;if both are turning left if min-one-of turtles with [turning = "left" and coming-from = "N"] [pycor] != nobody and one-of turtles with [turning = "straight" and started-to-turn = false and coming-from = "N" and abs ycor < (time-gap * 4)] = nobody [set result false] ] ] ;;NORTH---------------------------- if from = "N" [ if to-where = "left" and one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 4)] != nobody [ set result true ;;if both are turning left if min-one-of turtles with [turning = "left" and coming-from = "S"] [pycor * -1] != nobody and one-of turtles with [turning = "straight" and started-to-turn = false and coming-from = "S" and abs ycor < (time-gap * 4)] = nobody [set result false] ] ] ;;EAST------------------------------ if from = "E" [ if to-where = "left" and (one-of turtles with [coming-from = "W" and abs xcor < (time-gap * 4)] != nobody or ((one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 3)] != nobody or one-of turtles with [coming-from = "N" and abs ycor < (time-gap * 3)] != nobody) and intersection-type != "Traffic lights")) [ set result true ;;if both are turning left if min-one-of turtles with [turning = "left" and coming-from = "W"] [pxcor * -1] != nobody and one-of turtles with [coming-from = "S" and abs ycor < 4] = nobody and one-of turtles with [coming-from = "N" and abs ycor < 4] = nobody and one-of turtles with [coming-from = "W" and abs xcor > -3 and turning != "left"] = nobody [set result false] ] if to-where = "right" and one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 3) and turning = "straight"] != nobody [ set result true ] if to-where = "straight" and (one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 3)] != nobody or one-of turtles with [coming-from = "N" and abs ycor < (time-gap * 3)] != nobody) [ set result true ] if [pcolor] of patch-ahead -1 = orange ;; for car that is turning left and is waiting for clear intersection [ set result false ] if intersection-type = "Traffic lights" and lights = "east-west" and (turning = "right" or turning = "straight") [ set result false ] ] ;;WEST----------------------------- if from = "W" [ if to-where = "left" and (one-of turtles with [coming-from = "E" and xcor < (time-gap * 4)] != nobody or ((one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 3)] != nobody or one-of turtles with [coming-from = "N" and abs ycor < (time-gap * 3)] != nobody) and intersection-type != "Traffic lights")) [ set result true ;;if both are turning left if min-one-of turtles with [turning = "left" and coming-from = "E"] [pxcor] != nobody and one-of turtles with [coming-from = "S" and abs ycor < 4] = nobody and one-of turtles with [coming-from = "N" and abs ycor < 4] = nobody and one-of turtles with [coming-from = "E" and abs xcor < 3 and turning != "left"] = nobody [set result false] ] if to-where = "right" and one-of turtles with [coming-from = "N" and abs ycor < (time-gap * 3) and turning = "straight"] != nobody [ set result true ] if to-where = "straight" and (one-of turtles with [coming-from = "S" and abs ycor < (time-gap * 3)] != nobody or one-of turtles with [coming-from = "N" and abs ycor < (time-gap * 3)] != nobody) [ set result true ] if [pcolor] of patch-ahead -1 = orange ;; for car that is turning left and is waiting for clear intersection [ set result false ] if intersection-type = "Traffic lights" and lights = "east-west" and (turning = "right" or turning = "straight") [ set result false ] ] ;;ALL------------------------ ;let cars turning to the right leave first if one-of other turtles with [turning = "right" and started-to-turn = false and coming-from = self] != nobody [ set result true ] ;;Getting result based on obey attr if obey = false [ if result [set result false] ;;not giving way while should ] report result end to-report turn? [coming-f coming-t] ;;decide which way to go let where 0 ask cars [ if coming-f = "E" [ if coming-t = "S" [set where 1] if coming-t = "N" [set where 2] if coming-t = "W" [set where 3] ] if coming-f = "W" [ if coming-t = "N" [set where 1] if coming-t = "S" [set where 2] if coming-t = "E" [set where 3] ] if coming-f = "S" [ if coming-t = "W" [set where 1] if coming-t = "E" [set where 2] if coming-t = "N" [set where 3] ] if coming-f = "N" [ if coming-t = "E" [set where 1] if coming-t = "W" [set where 2] if coming-t = "S" [set where 3] ] ] report where end to build-roads let roadx 0 let roady 0 ask patches[ ;;color roads if (pxcor > (roadx - 5)) and (pxcor < (roadx + 5)) [ set pcolor grey ] if (pycor > (roady - 5)) and (pycor < (roady + 5)) [ set pcolor grey ] ;;add lines if pycor > (roady - 1) and pycor < (roady + 1) [ set pcolor white ] if pxcor > (roadx - 1) and pxcor < (roadx + 1) [ set pcolor white ] ] end to build-crossroad ask patches[ ;;color crossroad if pxcor > -5 and pxcor < 5 and pycor > -5 and pycor < 5 [ set pcolor grey - 1 ] ;;stop signs if pxcor = 5 and pycor >= 0 and pycor < 5 [ set pcolor red - 1 ] if pxcor = -5 and pycor <= 0 and pycor > -5 [ set pcolor red - 1 ] ] end to build-roundabout ask patch 0 0 [ ask patches in-radius roundabout-radius [ set pcolor grey - 1 ] ask patches in-radius (roundabout-radius - 5) [ set pcolor black ] ] ask patch 11 0 [set pcolor grey] ask patch -11 0 [set pcolor grey] ask patch 0 11 [set pcolor grey] ask patch 0 -11 [set pcolor grey] end to build-lights ask patches[ ;;color traffic lights if pxcor > -5 and pxcor < 5 and pycor > -5 and pycor < 5 [set pcolor grey - 1] ;;red lights if pxcor = 5 and pycor >= 0 and pycor < 5 [set pcolor red] if pxcor = -5 and pycor <= 0 and pycor > -5 [set pcolor red] ;;green lights if pycor = 5 and pxcor <= 0 and pxcor > -5 [set pcolor green] if pycor = -5 and pxcor >= 0 and pxcor < 5 [set pcolor green] ] end to add-car if cars-count < max-cars [ create-cars 1 set cars-count cars-count + 1 ] ask cars with [new != false] [ ;; creating car from a specific direction set obey true let total-from (from-SOUTH + from-NORTH + from-EAST + from-WEST) let dir-from random total-from setxy 0 0 if dir-from = 0 [ set cars-count cars-count - 1 die ] if dir-from <= from-EAST [ ;;avoid creating a car on top of an existing car ifelse one-of turtles-on patch-at 32 2 = nobody and one-of turtles-on patch-at 31 2 = nobody [ setxy 32 2 set heading -90 set coming-from "E" ] [ set cars-count cars-count - 1 die ] ] if dir-from > from-EAST and dir-from <= (from-EAST + from-WEST) [ ifelse one-of turtles-on patch-at -32 -2 = nobody and one-of turtles-on patch-at -31 -2 = nobody [ setxy -32 -2 set heading 90 set coming-from "W" ] [ set cars-count cars-count - 1 die ] ] if dir-from > (from-EAST + from-WEST) and dir-from <= (from-EAST + from-WEST + from-SOUTH) [ ifelse one-of turtles-on patch-at 2 -32 = nobody and one-of turtles-on patch-at 2 -31 = nobody [ setxy 2 -32 set heading 0 set coming-from "S" ] [ set cars-count cars-count - 1 die ] ] if dir-from > (total-from - from-NORTH) [ ifelse one-of turtles-on patch-at -2 32 = nobody and one-of turtles-on patch-at -2 31 = nobody [ setxy -2 32 set heading 180 set coming-from "N" ] [ set cars-count cars-count - 1 die ] ] ;;determining destination let total-to (to-SOUTH + to-NORTH + to-EAST + to-WEST) let dir-to random total-to if dir-to = 0 [ set cars-count cars-count - 1 die ] if dir-to <= to-EAST [ifelse coming-from != "E" [set coming-to "E"] [set coming-to "W"] ] if dir-to > to-EAST and dir-to <= (to-EAST + to-WEST) [ifelse coming-from != "W" [set coming-to "W"] [set coming-to "E"] ] if dir-to > (to-EAST + to-WEST) and dir-to <= (to-EAST + to-WEST + to-SOUTH) [ifelse coming-from != "S" [set coming-to "S"] [set coming-to "N"] ] if dir-to > (total-to - to-NORTH) [ifelse coming-from != "N" [set coming-to "N"] [set coming-to "S"] ] if turning-lane = True [if intersection-type = "Traffic lights" or intersection-type = "Crossroad" [if coming-from = "N" and coming-to = "W" [setxy -3.5 32] if coming-from = "S" and coming-to = "E" [setxy 3.5 -32] ] ] set label coming-to set size 2.5 set shape "car top" ifelse obey [set color green - 1] [set color brown - 2] set old-xcor xcor set old-ycor ycor set waiting 0 ] end @#$#@#$#@ GRAPHICS-WINDOW 519 68 1047 597 -1 -1 8.0 1 10 1 1 1 0 0 0 1 -32 32 -32 32 1 1 1 ticks 30.0 BUTTON 30 83 93 116 setup setup NIL 1 T OBSERVER NIL NIL NIL NIL 1 BUTTON 121 83 184 116 NIL go T 1 T OBSERVER NIL NIL NIL NIL 1 CHOOSER 30 19 168 64 intersection-type intersection-type "Crossroad" "Roundabout" "Traffic lights" 0 SLIDER 27 130 199 163 max-cars max-cars 0 20 20.0 1 1 NIL HORIZONTAL SLIDER 207 130 382 163 new-cars-frequency new-cars-frequency 0 100 75.0 1 1 % HORIZONTAL MONITOR 26 459 98 504 cars-count cars-count 0 1 11 MONITOR 116 462 205 507 NIL went-through 0 1 11 INPUTBOX 221 460 323 520 limit 4000.0 1 0 Number PLOT 124 552 324 702 average-waiting-time time average-wait-time 0.0 10.0 0.0 10.0 true false "" "" PENS "default" 1.0 0 -16777216 true "" "plot avg-waiting" MONITOR 29 551 118 604 NIL avg-waiting 2 1 13 SLIDER 26 242 198 275 yellow-length yellow-length 4 15 5.0 1 1 NIL HORIZONTAL SLIDER 22 196 203 229 green-length-west-east green-length-west-east 1 75 20.0 1 1 NIL HORIZONTAL SLIDER 213 195 405 228 green-length-north-south green-length-north-south 1 75 55.0 1 1 NIL HORIZONTAL SLIDER 596 611 768 644 from-SOUTH from-SOUTH 0 100 80.0 1 1 NIL HORIZONTAL SLIDER 596 23 768 56 from-NORTH from-NORTH 0 100 100.0 1 1 NIL HORIZONTAL SLIDER 1072 287 1244 320 from-EAST from-EAST 0 100 20.0 1 1 NIL HORIZONTAL SLIDER 322 281 494 314 from-WEST from-WEST 0 100 30.0 1 1 NIL HORIZONTAL SLIDER 795 612 967 645 to-SOUTH to-SOUTH 0 100 100.0 1 1 NIL HORIZONTAL SLIDER 799 23 971 56 to-NORTH to-NORTH 0 100 100.0 1 1 NIL HORIZONTAL SLIDER 1072 337 1244 370 to-EAST to-EAST 0 100 20.0 1 1 NIL HORIZONTAL SLIDER 320 337 492 370 to-WEST to-WEST 0 100 15.0 1 1 NIL HORIZONTAL SWITCH 27 340 150 373 turning-lane turning-lane 0 1 -1000 SLIDER 25 413 197 446 roundabout-radius roundabout-radius 9 11 9.0 1 1 NIL HORIZONTAL SLIDER 25 298 201 331 time-gap time-gap 3 4 4.0 1 1 NIL HORIZONTAL @#$#@#$#@ @#$#@#$#@ default true 0 Polygon -7500403 true true 150 5 40 250 150 205 260 250 airplane true 0 Polygon -7500403 true true 150 0 135 15 120 60 120 105 15 165 15 195 120 180 135 240 105 270 120 285 150 270 180 285 210 270 165 240 180 180 285 195 285 165 180 105 180 60 165 15 arrow true 0 Polygon -7500403 true true 150 0 0 150 105 150 105 293 195 293 195 150 300 150 box false 0 Polygon -7500403 true true 150 285 285 225 285 75 150 135 Polygon -7500403 true true 150 135 15 75 150 15 285 75 Polygon -7500403 true true 15 75 15 225 150 285 150 135 Line -16777216 false 150 285 150 135 Line -16777216 false 150 135 15 75 Line -16777216 false 150 135 285 75 bug true 0 Circle -7500403 true true 96 182 108 Circle -7500403 true true 110 127 80 Circle -7500403 true true 110 75 80 Line -7500403 true 150 100 80 30 Line -7500403 true 150 100 220 30 butterfly true 0 Polygon -7500403 true true 150 165 209 199 225 225 225 255 195 270 165 255 150 240 Polygon -7500403 true true 150 165 89 198 75 225 75 255 105 270 135 255 150 240 Polygon -7500403 true true 139 148 100 105 55 90 25 90 10 105 10 135 25 180 40 195 85 194 139 163 Polygon -7500403 true true 162 150 200 105 245 90 275 90 290 105 290 135 275 180 260 195 215 195 162 165 Polygon -16777216 true false 150 255 135 225 120 150 135 120 150 105 165 120 180 150 165 225 Circle -16777216 true false 135 90 30 Line -16777216 false 150 105 195 60 Line -16777216 false 150 105 105 60 car false 0 Polygon -7500403 true true 300 180 279 164 261 144 240 135 226 132 213 106 203 84 185 63 159 50 135 50 75 60 0 150 0 165 0 225 300 225 300 180 Circle -16777216 true false 180 180 90 Circle -16777216 true false 30 180 90 Polygon -16777216 true false 162 80 132 78 134 135 209 135 194 105 189 96 180 89 Circle -7500403 true true 47 195 58 Circle -7500403 true true 195 195 58 car top true 0 Polygon -7500403 true true 151 8 119 10 98 25 86 48 82 225 90 270 105 289 150 294 195 291 210 270 219 225 214 47 201 24 181 11 Polygon -16777216 true false 210 195 195 210 195 135 210 105 Polygon -16777216 true false 105 255 120 270 180 270 195 255 195 225 105 225 Polygon -16777216 true false 90 195 105 210 105 135 90 105 Polygon -1 true false 205 29 180 30 181 11 Line -7500403 false 210 165 195 165 Line -7500403 false 90 165 105 165 Polygon -16777216 true false 121 135 180 134 204 97 182 89 153 85 120 89 98 97 Line -16777216 false 210 90 195 30 Line -16777216 false 90 90 105 30 Polygon -1 true false 95 29 120 30 119 11 circle false 0 Circle -7500403 true true 0 0 300 circle 2 false 0 Circle -7500403 true true 0 0 300 Circle -16777216 true false 30 30 240 cow false 0 Polygon -7500403 true true 200 193 197 249 179 249 177 196 166 187 140 189 93 191 78 179 72 211 49 209 48 181 37 149 25 120 25 89 45 72 103 84 179 75 198 76 252 64 272 81 293 103 285 121 255 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