In the development and administration of any plan for individuals to receive notification of significant highway or railway incidents, the Department of Transportation shall not permanently retain or enter in a permanent database any personal information including, but not limited to, the electronic mail address of any person who receives information through the use of such plan. Nothing in this section shall be construed to prohibit the Department of Transportation from entering the electronic mail address of any person who wishes to receive such information in a computer program used by the department solely for the purpose of sending such person electronic mail that contains notification of a significant highway or railway incident.