  In the coming years, transportation system will be revamped in a manner that
there will be more intelligent and autonomous vehicle phenomenon around us such
as smart cars, auto driving system, etc. Some of automotive industries are
already producing smart cars. However, the main concern of this paper is on the
infrastructure for connected vehicles, which can support such intelligent
transportation. Current transportation system lacks proper infrastructure to
support connected vehicles. Hence, in this article, we have surveyed and
analyzed the current transportation system in developed and developing
countries. In contrast, we are going to introduce secure intelligent
transportation (roadside) infrastructure that is user centric (Driver,
Autonomous driver etc.) for connected vehicles. In this paper we present the
basic requirements of safety engineering infrastructure of roadside
infrastructure in ITS for connected vehicles. Connected vehicles has network
infrastructure to communicate with vehicle-to-vehicle (V-to-V),
vehicle-to-infrastructure (V-to-I), lane correction system, and traffic
information system etc. The connected vehicle is a good model for learning
demands of infrastructure for ITS process because the system having a lot of
use-cases and we must understand relationship between public institutions,
people, companies in order to proceed ITS System.
