And another thing: I know this is a nitpick that has nothing to do with traffic signals, but I don't think that circuit will work as shown. Looking at the 4017 datasheet, the high output current is, at best, 3-4 mA per output (and less than 1mA at worst). One would need to add driver transistors (easily done) to make it actually work.
"Q0 is connected to N/S yellow and E/W red. All the greens are connected to either Q1-Q4 or Q6-Q9."
Q4 is connected to N/S yellow
Q9 is connected to E/W yellow
Don't know where you figure otherwise.
Perhaps build said circuit on a breadboard and try it.
In the circuit you posted the 1st output (Q0) pin #3 goes to the top diode then to the N/S green and then to E/W red and then to ground and so does Q1, 2, and 3. N/S Yellow is conected to Q4 pin10 and goes thru the E/W red LEDs to get to ground.
Looking at the 4017 datasheet, the high output current is, at best, 3-4 mA per output (and less than 1mA at worst). One would need to add driver transistors (easily done) to make it actually work.
The TI data sheet for the CD4017B lists the Output High Source Current IOH Min. as 2.6ma with a 10 voltage supply and 6.8ma with a supply voltage of 15 volts, typ. at 25 degrees centigrade. That is minimun current supplyed witch is enough to light LEDs.
Andy
Carbonzit, this schematic is correct. Make sure you are reading the labels correctly. I don't know what you are seeing, but there is nothing wrong with the connections from the chip to the LEDs.
I finally got it working. I did it with the 4017 counter hooked to a triple 3-input OR gate and also a dual 4-input OR gate. Thanks for your replies, though, that really helped me in no way at all.
Carbonzit, this schematic is correct. Make sure you are reading the labels correctly. I don't know what you are seeing, but there is nothing wrong with the connections from the chip to the LEDs.