This application uses AJAX requests to dynamically change the drop down menus. After a make is selected, the model drop down menus will only show models specific to the make that was first selected. This is also true for selection of the year. This is done using AJAX, JavaScript, SQL, and PHP. I downloaded this database from the National Highway Traffic Safety Administration. I built SQL queries that will search Recalls for a specific make, model, and year. Enter the criteria for the fields you want to narrow.