Please review my IELTS essay

The pictures illustrates a number of changes to road access to a city hospital which took place between 2007 and 2010.

Overall, there was radical changes with the most noticeable being the relocation and expansion of car park and bus station.

In 2007, there was only one car park to the south east of city hospital which is used by both staff and public. 3 years later, the public car park was then relocated to the east of the hospital. Meanwhile, roads leading to the hospital remained unchanged during the period.

A number of bus stops were constructed on both sides along the Hospital Road though, they were then relocated to a new, larger station which is directly opposite the staff car park. Finally, at junctions of Hospital Road and Ring Road and City Road, two traffic circles was constructed to make sure all traffic would go around in the same direction.