Because Intelligeni Transportation Systems (ITS) R&D is performed for the ultimate depolyment in the real world, deployment issues may limit design options for ITS operating concepts and technologies and, hence, can be viewed as constraints on ITS R&D. Therefore, ITS deployment issues must be studied at the outset of the R&D process. This paper develops a framework to help anticipate, recognize and organize such issues. The findings can be used by ITS researchers in developing deployable ITS operating concepts and the enabling technologies and by ITS promoters in deploying ITS operating concepts and technologies having been developed already. Based on a focus on decisions and decision makers impacting the deployment of ITS user services, we attempt to“derive”the issue dimensions of such a framework. The resulting eight dimensions of ITS deployment issues are: need, solution/opportunity, decision maker, decision making, decision influencing, time, risk management, and synergy.