The SRR Order (PDF) lists only roads that are restricted. At the beginning of the Order, the official start date is listed, which is March 11 of the applicable year. The interpretations section provides basic information as to what the road restriction levels are:
It also defines the two climatic zones, and their start and end dates .
The lists of restricted roads are subdivided based on classes of highway. Section “A” details RTAC Routes and A1 highways restricted to Level 1 loading. Section “B” lists B1 highways subject to Level 1 restrictions. Section “C” details all highways subject to Level 2 restrictions.
The restricted highway is listed on the left of the Order; the section(s) of the highway that is restricted is listed to the right. Please note that some highways may be partly RTAC, A1 and/or B1, and may be restricted to Level 1 and/or Level 2 weights. It is important to look for the highway in question in all three sections of the Order. A highway (or a section of a highway) not listed in any of the sections is allowed normal loading.
At the end of the Order, the Provisos that allow exceptions to the policy (such as essential commodities) are listed.