Raycasting Errors - Raycast not ignoring part in Ignore list...?

[LMVM2041 (League)]

Introduction and what I’m making

So I am making a street speed camera that displays your speed once you touch a part. The part is long enough to update the speed a few times.

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Problem

So the problem I am having is that even though the part “Highway” (the ground/base of the road that can be seen in the photo above) is in my “Ignored” list, it still casts on it.

Here is a photo showing that the raycast is casting on the highway, not the “InitiateSpeedRadar” part:

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Code

The code is a server script inside of the raycasting part (street camera):

local SpeedRadar = script.Parent
local InitiateSpeedRadar = workspace:FindFirstChild("InitiateSpeedRadar")
local db = false

InitiateSpeedRadar.Touched:Connect(function(otherPart)
	local RayCastParams = RaycastParams.new()
	RayCastParams.FilterType = Enum.RaycastFilterType.Blacklist
	RayCastParams.FilterDescendantsInstances = {SpeedRadar, workspace.Highway}
	local rayOrigin = SpeedRadar.Position
	local rayDirection = Vector3.new(36.344, -3.486, -49.566)
	
	local RaycastResult = workspace:Raycast(rayOrigin, rayDirection, RayCastParams)

	if RaycastResult then
		print("Raycasting!")
		print(otherPart.Name)
		if db == false then
			db = true
			print(otherPart.Name)
			if otherPart:IsA("Part") then
				if otherPart.Parent:IsA("Model") then
					if not otherPart.Parent:FindFirstChild("DriveSeat") then
						db = false
						return print("No seat detected!")
					else
						print("Parent detected")
						local driveSeat = otherPart.Parent.DriveSeat
						local speed = driveSeat.Velocity.Magnitude
						local formattedSpeed = math.floor(speed + 0.5)

						if formattedSpeed >= 100 then
							SpeedRadar.SurfaceGui.Speed.Text = "SLOW DOWN!"
							print("FAST!")
						else
							SpeedRadar.SurfaceGui.Speed.Text = formattedSpeed
						end

						wait(0.5)
						db = false
					end
				else
					db = false
					return print("Plain part detetced!")
				end
			else
				db = false
				return warn("Not a model")
			end
		end
	end
end)

Once it tells me it raycasted on the highway, it breaks and it doesn’t work afterward.

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Important Notes

• The script should be initiating only if another part is touching it…
• I tested the script earlier and it worked, but it wasn’t in the same game. The only thing I changed was the direction.