Summary: Information plays a critical role in the Department of Transportation's (DOT) regulation of hundreds of thousands of shippers, carriers, and container manufacturers handling hazardous materials. However, previous studies by GAO and others have noted that DOT lacks accurate, complete data to monitor this vast community. Department progress in improving this situation has been slow; two initiatives to improve DOT's information management of inspection and enforcement activities have floundered. As a result, DOT cannot use information to evaluate effectively improvements in safety accruing from its inspection and enforcement activities or support Departmentwide hazardous waste enforcement activities. Information resources management strategies are designed to identify ways in which information and technology can be used to support effectively missions needs. Without such a strategy, DOT will have a hard time applying information technology Departmentwide and in resolving longstanding information shortcomings.