System (Electronic Road Pricing) was implemented in 1998
to attract attention to drivers who have not paid for a parking
ticket or have passed though a highway toll illegally where
the ERP sensors are deployed. Also, the Singapore Government
has implemented “Green” technologies to current and
forthcoming systems. This approach is based on car to car
communication but includes energy efficient lighting for
traffic and street lights, recycled materials for road pavement
construction, and construction methods that minimizes the
impact on the environment [40].