Definition

Notes

Section Definition

A separate Chart Section is defined for each element of the Network Road - thus the Main Carriageway, and Slips / Roundabouts are considered as separate entities.  Dual Carriageway and Motorway definitions define separate Chart Sections for each direction.   Two way carriageways are created as a single Chart Section.

Chart Sections are typically limited to a maximum length of 10km.

Network Area

Each Section is defined within a Network Area code (often linked to former County Boundaries).  This code is a four digit reference: 2300, 2400 etc.

Road Number

The target Road or Route Number makes up the next part of the reference.  For example M6, A1, A1M.

Link Reference

A single digit classification between 0 and 9 that divides each Route within an Area in to a number of more manageable groups.

Section Number

A numeric reference between 00 and 99 identifying the specific Network Section.

Section Reference

HighStone applies the above syntax strictly in the style 4200-M60-1-32.  This is adopted to simplify usage, searching and sorting facilities.

Other Applications apply the syntax in a different style - 4200M60/132.  This style is provided where it is needed to provide links with other Applications - however it is not the HighStone preferred format for the following reasons:

Combining the Link / Section in to a single entity (as the external format does) pulls in potentially 999 Sections for each Area / Route which is a lot to handle.

No prefix padding is applied to the Link / Section number which renders direct sorting of the reference invalid.

The '/' character cannot be used in File and Folder names on the host Operating System.  Whereas the HighStone Format can be used directly.