Development of this website was financed in part through funds provided by the Iowa Department of Transportation and Federal Highway Administration state planning and research funding.
The contents of this website reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. The opinions, findings and conclusions expressed in this website are those of the authors and not necessarily those of the sponsors.
The sponsors assume no liability for the contents or use of the information contained in this website. This website does not constitute a standard, specification, or regulation.
The sponsors do not endorse products or manufacturers. Trademarks or manufacturers’ names appear on this website only because they are considered essential to the website’s objective.