Currently, the truck industry does not systematically address driver issues in Intelligent Vehicle-Highway System development. Because this industry is at the forefront of IVHS system and device development, it is imperative that the human factors issues are included in the research, development, design and evaluation of IVHS systems. This will minimize the risk of inadequate, unusable and unsafe devices that become a part of every truck drivers day.As IVHS technology is developed and more of these devices become available a new issue must be addressed: will the combination of these new devices overwhelm the driver and result in a reduction of safety? Could the combination of certain systems counteract each other, resulting in an unused or unusable system?History indicates these problems, and many others are definite possibilities. This paper will discuss some of the issues that have been identified and solved in other systems with the hope that the principles can be applied in this industry.