Basis for Recommendation
Whilst the provision of key infrastructure information affecting the planning of each SSOW is to be made available through the publication of TAIs as addressed in USAN 006 Recommendation 1, it was identified that the location of specific instructions, particularly those relating to tunnel access, are inconsistently documented between functions and locations and are spread across multiple documents. The use of standalone notices (e.g. SHED Notice SN 1000/24/ 25b) increases the likelihood of being overlooked and becoming reliant on previous experience.