Posted July 16, 2013. It's pretty fun watching the ridiculous wrecks on the freeways. I've seen some MAJOR explosions. To answer your question OP, the traffic can't be slowed down without modding. It's just a normal part of the driver AI in SA. We've got a list of all of the San Andreas cheat codes for the GTA Definitive Edition. Open menu. The home of sports games. Reduced Traffic - X, DOWN, UP, R2, DOWN, TRIANGLE, L1, Grand Theft Auto: San Andreas Cheat Codes. Below you will find all of the cheat codes available in GTA: Aggressive Traffic . R2, Circle, R1, L2, Left R1, L1, R2, L2 ; All Cars Have Nitros . eC0lRxz.