The Vehicle Speed Monitoring System using RF Jammer is an innovative solution aimed at enhancing road safety and traffic management by controlling vehicle speeds in designated areas. The system utilizes RF jammer technology to disrupt communication signals between vehicles and speed detection devices, such as radar or laser-based speed guns. By strategically deploying RF jammers, the system prevents vehicles from receiving accurate speed detection signals, thus inhibiting their ability to determine their speed.Key components include Arduino Nano microcontrollers, RF jammer modules, speed detection sensors, and a central control unit. The microcontrollers control the RF jammers, emitting signals at specific frequencies and intervals. Speed detection sensors monitor vehicle speeds and relay data to the central control unit, which coordinates the activation of RF jammers based on predefined speed thresholds and traffic conditions.This system offers real-time speed control, adaptability to different road environments, and minimal infrastructure requirements compared to traditional methods. By deterring speeding behaviors and promoting adherence to speed limits.