Transistor based traffic lights

[Ibetcha0045]

I have tried to make a two sided traffic light using trasistors. I know that I could do it with ic's but I really want one the is analog.

 

[blueroomelectronics]

You'll need more than transistors.

 

[MikeMl]

Do you mean like flip-flops and logic gates made out of transistors?

 

[audioguru]

You could make a timer from a big capacitor charging from a high value resistor and a Fet or Darlington sensing its output voltage.
Then instead of using an inexpensive counter IC you can make your own from about 30 transistors.

 

[Mosaic]

Perhaps the circuit at the bottom of the link could work:
Telephone In-Use Relay, LM317 Regulators, Lithium Charger

Adjust the RC combos to control the red/green light delays, replace the LEDs with DPDT relays to control two sets of red/green lights at an intersection. Wire the relays so green on one light means red on the other.