nRFs24L01 message collapsing

Hello guys, Im doing a V2V communication system to detect presence of vehicles at T-junction. I have a main transmitter which receives messages from passing cars and broadcast them. However, when 2 slaves with same codes and addresses are transmitting, the one with stronger power is overshadowing the other one. My codes are fromhttps://forum.arduino.cc/t/simple-nrf24l01-2-4ghz-transceiver-demo/405123/4?u=blind04
Kindly please help me to solve this issue. Thank you.

If you have two transmitters transmitting at the same time, on the same frequency, in the same area, they are going to interfere.

I'm a newbie in the coding environment. Grateful if you could help me to automatically provide an ID to the slaves by the master and allow communication on different frequencies or time interval. Thanks