Bishop's Stortford High School wants to redevelop its campus after it relocates less than a mile to the new 750-home estate off Whittington Way.
Deborah Austin, a practice nurse at South Street Surgery, had parked in a layby on Stortford Fields to tend to her ill daughter and grandchild.
Herts County Council's highways department has backed campaigners who claim the development at London Road will add to unbearable congestion.
Bishop's Stortford Town Council, Chantry Community Association, East Herts district councillors and Herts highways are all opposed.
The partners at the Bishop's Stortford town centre practice have drawn up proposals for a state-of-the-art block.
East Herts approves masterplans which lift capacity on Bishop's Stortford High School site from 150 to 223 homes and at golf club from 50 to 62.
Finds from dig at site of Countryside Properties' new 750-home estate off Whittington Way can be viewed at open days on February 21 and 22.
In one week, residents were cut off by road closures and by heavy rain flooding the diversion route, a single-track lane through a ford.
Over £15.5m for schools as part of community benefits package after Countryside’s plans for former Green Belt farmland finally signed off by council.
County Hall's decision clears the path for The Bishop's Stortford High School's London Road campus to be demolished to make way for 240 homes.
Two residents have cast doubt on traffic reports relating to the proposed 750-home development off Whittington Way.
Governors hope to sell London Road buildings and playing fields to a developer and use the proceeds to build a new school off Whittington Way.