05:45:51.219 - Workspace.RoadGenerator:72: attempt to perform arithmetic (mul) on table and number
05:45:51.220 - Stack Begin
05:45:51.220 - Script ‘Workspace.RoadGenerator’, Line 72 - function genRoad
05:45:51.220 - Script ‘Workspace.RoadGenerator’, Line 135 - function generateRoads
05:45:51.221 - Script ‘rg.generateRoads(false, true, .5, 10000)’, Line 1
05:45:51.221 - Stack End
Does it work when you just run .generateRoads()?
No, it doesnt unfortunately
sucks because it looks so good and would be so useful
Are you sure you pasted the RoadData in correctly?
This is a little confusing since it worked for others.
For me as well, I could give up on this. Generate is really good, there is another way like to make roads realistic, highways, transportations tunnels, etc?
Whoops… Is this normal? 
(edit: and this?) 
Have you made sure you pasted the data into the RoadData multi line string correctly?
local module = {}
module.Data = [[
{
“type”: “FeatureCollection”,
“name”: “roads”,
“crs”: { “type”: “name”, “properties”: { “name”: “urn:ogc:def:crs:OGC:1.3:CRS84” } },
“features”: [
– blah blah blah
]
}
]]
return module
If that’s exactly what you’re code is, then that may be the issue. There’s no data in that.
ps, to make it easier for people to read your code on the forums make sure you format it like so:
Ah, sorry. And where I put “blah blah blah”, that’s all my data - it’s just pretty spammy.
And you’re 100% sure you pasted the data correctly? (and didn’t change any code in the main module?)
I haven’t seen this error before.
I pasted it all correctly. If it matters, I used Atom instead of Notepad++
Im getting length error.
Does this work with bridges and overpasses?
fixed the module; theres a limit of 617 roads, more than this and roblox breaks
--[[
RoadGenerator
Open-sourced script created by MrSprinkleToes
Updated by Tob_Coline
This version was changed on 7/22/2024.
--]]
local module = {}
local roadData = require(script.RoadData).Data
-- everything below this comment may break if you aren't sure what you're doing, so be careful!
-- if you think you probably know what you're doing, feel free to mess around with it!
function module.generateRoads(colorRoads, drawPoints, roadWidth)
-- make sure all vars have values
colorRoads = colorRoads or false -- default value false
drawPoints = drawPoints or false -- default value false
roadWidth = roadWidth or 5 -- default value 5
local scaleMultiplier = 10000 -- must keep value at 10000
local tbl = game:GetService("HttpService"):JSONDecode(roadData)
local roadColors = {}
local f = false
local function num(model)
local amount = 0
for _,thing in pairs(model:GetChildren()) do
amount = amount + 1
end
return amount
end
local function genRoad(number)
local roads = Instance.new("Model", workspace)
local road = tbl["features"][number]
local properties = road["properties"]
local roadname = properties["name"] or properties["official_name"] or "Unknown"
local coordinates = road["geometry"]["coordinates"]
-- set road color
if colorRoads then
roadColors[roadname] = Color3.fromRGB(math.random(0,255),math.random(0,255),math.random(0,255))
end
-- set road name
roads.Name = roadname or properties["alt_name"] or "Unknown"
local count = 1
-- create & name each point of the road in the correct order
for _,coordinate in pairs(coordinates) do
local x = coordinate[1]
local z = coordinate[2]
local p = Instance.new("Part", roads)
p.Size = Vector3.new(.5,.5,.5)
p.Anchored = true
p.Position = Vector3.new(x * scaleMultiplier, 0, z * scaleMultiplier)
p.Name = count
p.Material = Enum.Material.Neon
p.Color = roadColors[roadname] or Color3.fromRGB(163, 162, 165)
roads.PrimaryPart = p
count = count + 1
end
return roads
end
local function drawRoad(model)
local current = 1
-- for each point in the road
for i = 1, #model:GetChildren() do
-- if there is a point after the current point
if model:FindFirstChild(current+1) then
local p = Instance.new("Part", model)
p.Anchored = true
p.Material = Enum.Material.SmoothPlastic
if colorRoads then
p.Color = model:FindFirstChild(current).Color
else
p.Color = Color3.fromRGB(27, 42, 53)
end
-- draw a part between the current & next point in the road
local p1 = model:FindFirstChild(current).Position
local p2 = model:FindFirstChild(current+1).Position
local part = p
part.CFrame = CFrame.fromMatrix((p1+p2)/2,(p2-p1).Unit,Vector3.new(0,1,0),- Vector3.new(0,1,0):Cross((p2-p1).Unit))
part.Size = Vector3.new((p2-p1).Magnitude,.25,.5)
-- make the current & next points invisible if not drawing points
if not drawPoints then
model:FindFirstChild(current).Transparency = 1
model:FindFirstChild(current+1).Transparency = 1
end
end
current = current + 1
end
end
local function combineandteleport()
local roads = Instance.new("Model", workspace)
roads.Name = "Roads"
local f = false
for _, object in pairs(workspace:GetChildren()) do
if object:IsA("Model") and object ~= roads then
object.Parent = roads
end
end
wait(5)
roads:PivotTo(CFrame.new(0,0,0))
roads:ScaleTo(roadWidth)
end
local MaxRoads = #tbl["features"]
if MaxRoads > 610 then
MaxRoads = 610
end
-- limit of 617 roads, more than this and roblox breaks
for i=1, MaxRoads do
local road = genRoad(i)
drawRoad(road)
end
combineandteleport()
warn("Roads generated!")
end
return module
Nice, but sadly only works with the Roads file, not with the buildings or landscape file