I have always thought that the most appropriate site for housing development in Knebworth is land to the south-east of the village, which can have a direct road connection onto London Road.
Such access would not put additional traffic over or under the three railway bridges, which could not accommodate the increased traffic (particularly the additional journeys to the proposed new primary school).
I would object, however, to more houses to the NORTH of Watton Road (east of the recreation ground); this area must be preserved, to avoid the coalescence of Knebworth with Stevenage.