green light when no occupied and red light when occupied to
assist the driver to find parking space. This technology can
provide comprehensive knowledge of the car park occupancy
is thus available and assist driver in searching empty car
parking space. Thus, it dramatically decrease the searching
time need to find an empty car parking space. One
shortcoming of vehicle sensor system is driver may not have
luck to park their car near to the entrance. They may lead by
the indicator to park their car far away and this does not
benefit the driver anymore. Another possible situation is
when there is only one available space; there will be more
than one car drive toward it. Competing on an available car
parking space is a waste of time and petrol. Furthermore, a
lot of sensors have to be used inside a car park. This will be
costly for a huge parking area and it also added up to the
sensor maintenance cost.
Some parking systems of foreign countries are providing
online reservation service to customer which they can
reserve a car parking space for a period of time like Munich
Airport [7]. Anyhow, problem arise when they park over the
limit of reserved time, their reserved parking space has been
parked by others and etc. Some of the system provided the
service that assigned parking space for driver via number
printed on ticket, but the parking space may be far away
from driver [8]. Sometimes it is inconvenient as the parking
space may be taken over by those who are illegal parking or
looking for available parking space too. One of the major
problems faced in online reservation systems is wasting
resources.Some drivers may reserve the parking spaces but
didn’t come to park or miss the parking period. So, the
system will hold the reserved parking spaces until the drivers
come or didn’t come. This will waste the parking spaces
because the system cannot utilize the available parking
spaces all the time in the car park. Besides, most drivers do
not have the necessary computer knowledge to make
reservation via the web. Therefore the system is aiming at
computer literate younger generation [9] [10].
With the advancement of wireless technologies, wireless
mobile-based methods have been employed in car parking
system. Monash University’s Facilities & Services Division,
Clayton campushas planned to develop a SMS based car
parking system called Monash Car Park SMS Project (MCarPS)
[11] [12]. This system provides users with
information about the vacant car park areas and payment for
the parking tickets. However, the drawback of the system is