The majority of these services will also provide additional capacity into Reading.
It had provided capacity for some 700 pupils during its days as a 12-16 school.
That will leave the older lines free to provide capacity for intermediate destinations.
The usual purpose is to provide higher capacity by increasing the number of lanes in each direction.
Additional fuel tanks may be equipped to provide added capacity.
An additional set, 1819, was built in 1987 as a 6-car set to provide increased capacity.
The proposed site will provide capacity for 120 additional buses (450 in total) and almost 1,100 employees.
Four additional sets (67 to 70) were delivered in 2008 to provide increased capacity.
A further three 6-car sets are on order for delivery by autumn 2012 to provide additional capacity.
The effort will also develop the technology to provide higher capacity and improved cost effectiveness.