10.3.1.1
Each Local Highway Authority is responsible for entering all the Streets within their administrative area into their LSG. Except for Motorways, for which a separate procedure applies (see Section 7), an LSG can only contain Streets within the administrative area of the Local Highway Authority creating it.
10.3.1.2
Local Highway Authority administrative boundaries dictate the limit of the Local Highway Authority recorded Street geometry in the NSG. To avoid duplication or gaps in the network, each Street that crosses an administrative boundary must end at the Local Highway Authority administrative boundary, with the neighbouring Local Highway Authority using their own USRN range and details for the Street. This means both Local Highway Authority’s must use the same coordinates to define where the Street intersects at the Local Highway Authority administrative boundary.