1. Highway Infrastructure Safety Inspections
The need for evolution…

2. The Old Code of Practice – the 2005 well maintained highways
Prescriptive
Recommendations
Specific Guidance
DCC 2013 Safety Inspection Manual
Based on 2005 Code of Practice
Included a risk based element to defect assessment
Potential for inconsistent approach

3. Existing Confirm System
Automatic response time associated with route inspection frequency
Two further attributes; probability and impact
Manually select low, medium and high priority for each
Manually alter priority

4. The New Code of Practice – Well-managed Highway Infrastructure
Introduced in 2016
To be implemented by end October 2018
A risk based approach
Non Prescriptive
Down to us to decide what we do locally
Evidence based approach
Good process and practice
Competency is key
DCC 2018 HIAM Safety Inspection Manual
Approved July 2018
Based on the New Code
Risk Based approach to defect assessment
Systemised
Supports the decision of the inspector
Full audit trail
Enquiries need to be aligned to risk based process
GO LIVE April 2019

5. New Risk Matrices – Carriageway & Footway

6. Defining Probability and Impact
Based on Network Hierarchy location
Series of questions related to defect type each with a score
Evidence based
Provides audit trail and support for inspector decisions
Consistency of approach
Generates risk score which relates to defect response time in the risk matrix
Inspector able to agree/disagree with output and amend if necessary with reason
P1: Carriageway Hierarchy Location
Hierarchy
Resilient Network
MH1
MH2
MH3
MH4
MH5
MH6
MH7
Score 8 7 6 5 4 3 2 1
P1: Footway Hierarchy Location
Hierarchy 1 2 3 4
Score

7. Example Probability and Impact Questions

8. New Confirm System New carriageway/footway risk scores inputted
New defect codes with associated questions
Risk score range is appended to defect response time
Requires manual inspector calculation, both addition and multiplication