**6. Result and discussion**

Light Fidelity is a high speed wireless communication through light-emitting diodes leaf and Wi-Fi are quite similar as both transmit data electromagnetically however Wi-Fi gives radio waves, while Li-Fi transforms visible light waves. Visible light communication (VLC) accommodates a photo detector to receive light signals

**Figure 8.** *Simulation results of Wi-Fi vs. Li-Fi.*

**Figure 9.** *Hardware model of proposed system.*

and uses a signal processing elements to convert the data into stream-able content. A semiconductor light source is operated at extremely high speed to perform visible light communication. The light source is dimmed below human visibility to carry the data [14]. For short distance communication can be preferred with this and it is possible in electromagnetic sensitive areas. The proposed model uses a leaf architecture with two modules, in which one act as leaf transmitter and the other as leaf receiver (**Figure 8**).

At transmitting sides we have buttons, when we press the right button the microcontroller will send data through the leaf and the module at the receiver receives the data by the leaf and sends it to the microcontroller. At the transmitter side the data transmitted through UART communication and receiver side we have a solar band receiver [11]. So that both the data are displayed on both by LCD modules. According to the instructions they have been programmed to display right, left, brake instructions by the vehicles. The proposed system hasa face recognition safety authorization system. The ultrasonic sensor detects the vehicles which are less than threshold distance and sends an alert message by displaying brake in the LCD display. The relay will apply the brake on the second vehicle automatically when the data is received (**Figure 9**).
