Netlogo ticks as a counter for a race - netlogo

Question

I'm writing code to make a race between 5 turtles. I have to show who wins the race through the use of ticks. I think I can use the ticks to count how much time it takes each turtle to move then compare them. However, I can't figure out where to put the "tick" in my code. Here's my code:
to finish
ask patches
;sets finish line pattern
[ifelse (pxcor + pycor) mod 2 = 0
;if true do this
[set pcolor pink]
;if false do this
[set pcolor yellow]
]
ask patches
;sets background black other than the finish line
[if pxcor < 12 [set pcolor black]
]
end
to lanes
ask patches
;sets the lanes
[ if pycor = 3 and pxcor < 12 [set pcolor white]
if pycor = 9 and pxcor < 12 [set pcolor white]
if pycor = -3 and pxcor < 12 [set pcolor white]
if pycor = -9 and pxcor < 12 [set pcolor white] ]
;setup for the turtle positions
cro 5
ask turtle 0 [setxy -15 0]
ask turtle 1 [setxy -15 6]
ask turtle 2 [setxy -15 12]
ask turtle 3 [setxy -15 -6]
ask turtle 4 [setxy -15 -12]
ask turtles [set heading 90] ;set heading 90 means moving the head of the turtle right 90 degrees
reset-ticks
end
to setup
finish
lanes
end
to movecars
every .1
[fd random 10 / 10]
end
to endrace
movecars
if xcor >= 12 [die]
end
to go
endrace
end

Answer 1

Almost always, tick goes as the last command in the go procedure. Certainly that's what you should be doing while you are new to NetLogo. Having said that, it won't make your code work.
Think of ticks as a time step counter. Each loop through the go procedure should do all the actions that need one time step to do and also advances the time step counter. So you don't need the every command, you just have the movecars procedure called by the go procedure and have ask turtles [forward random 10 / 10] in the movecars procedure.
This is a fairly fundamental conceptual gap and I suggest you look through some of the models in the NetLogo models library, focusing on the link between the go procedure and the moving procedure and the passage of time. Or perhaps do the tutorials again. Also, start your model more simply. Just create one car and get it to move, then worry about multiple cars, colours and seeing who wins. Add a little piece of your model and make it work before adding the next piece.
Try this:
to go
movecars
endrace
tick
end
to movecars
ask turtles [ fd random 10 / 10]
end
to endrace
ask turtles [ if xcor >= 12 [die] ]
end