A monitoring system for driver's braking habits comprising a sensor connected to brakes of a vehicle provided to sense and evaluate the following levels of pressure being applied to the brakes by a driver: normal pressure, above normal pressure and an excessive pressure level. The sensor is adapted to activate a warning signal element connected to the sensor and is provided to warn the driver when the pressure level exceeds the above normal pressure level and the excessive pressure level which facilitates correction of bad driving habits of the driver and development of preventive driving techniques. The sensor comprises a first sensor adapted to sense and evaluate the above normal pressure level, and a second sensor adapted to sense and evaluate the excessive pressure level.