Automatic Car Parking Indicator SystemDescription: Now days in many multiplex systems there is a severe problem for car parking systems. There are many lanes for car parking, so to park a car one has to look for the all lanes. Moreover there is a lot of men labor involved for this process for which there is lot of investment. So the need is to develop a system which indicates directly which parking slot is vacant in any lane. The project involves a system including infrared transmitter and receiver in every lane and a LED & LCD display outside the car parking gate. So the person entering parking area can view the LED display and can decide which lane to enter so as to park the car. Conventionally, car parking systems does not have any intelligent monitoring system. Parking lots are monitored by human beings. All vehicles enter into the parking and waste time for searching for parking slot. Sometimes it creates blockage. Condition become worse when there are multiple parking lanes and each lane have multiple parking slots. Use of automated system for car parking monitoring will reduce the human efforts. Display unit is installed on entrance of parking lot which will show LEDs for all Parking slot and for all parking lanes. Empty slot is indicated by the respective glowing LED. Block Diagram: Description in detail: . there is scope for false triggering due to sunlight or headlight of car. IR rays are obstructed when a car is parked in any parking slot. So considering all these points we have finalized to use IR module.We are going to use Infra Red transmitters and Receivers for each parking slot. We can add pick and place facility to park the cars automatically. multiplex 2) Can be used for industries. We have chosen IR module instead of RF module because we want a receiver having line of sight communication with the transmitter. And in case of LDR. commercial offices and educational institutes. which will be given to IR LEDs. 2. Using metal detectors and CCTV cameras security of the parking area can be enhanced. Applications and Advantages: 1) This project can be used for parking system in any shopping mall. This can be expanded in the sense of security. Timer IC will generate a frequency of 38 KHz. But RF does not require line of sight communication. Future Development: 1. Thus AVR will come to know that which slot is empty and which slot is full. The IR Receivers are connected to AVR microcontroller. For transmitter section we are going to use IR LEDs driven by a 555 timer IC. project sends SMS to the owner of the vehicle or to his/her family members. We have provided a Relay and a DC motor to show the demo of vehicle controlling system.SMS based Alcohol detection with vehicle controlling using GSM technology Description: This project has GSM technology and Alcohol detection system with vehicle controlling technique. At the same time vehicle controlling is done by stopping the vehicle engine. Whenever alcohol percentage crosses threshold level. Block Diagram: Description in detail: Various important blocks of system are: 1) Microcontroller 2) GSM Modem 3) Alcohol sensor 4) LCD Display 5) Relay 6) DC Motor . Advantages of SMS based Alcohol detection with vehicle controlling using GSM technology: 1) This project is easy to use.Applications and Advantages: Applications of SMS based Alcohol detection with vehicle controlling using GSM technology: 1) This project can be used in Car. . Public and Private Buses.