Infrastructure Delivery Plan (Feb 2013) - Runnymede Borough Council

Risk Assessment
6.13 The production of an effective and robust sustainable transport strategy for the
Borough [Risk ID IDPR004] might not be achieved over the plan period. As a result,
congestion on the SRN could increase to an unacceptable level. This could have a
knock on effect for congestion on the non strategic road network and could reduce the
desirability of the Borough for residents and businesses to live in and operate from.
This could have implications for economic growth within the Borough. The likelihood of
Risk IDRT71 being realised is considered high, given the fact that to date, and in spite
of numerous transport strategies and transport plans being in place, the effects of
congestion continue to increase. The severity is considered to be medium, as the
effects if realised will act more frequently above the capacity of the network.
6.14 Risk ID IDPR005 relates to the affects of accelerated climate change. It considers the
ability of the network to function to capacity as a result of adaptation inaction on the
part of the network provider/users. This is a recognised and credible universal risk to
this infrastructure and one that the Council has no control over. The probability is
considered low given the fact that events such as snow generally presents more
problems on the non-strategic road network than the SRN, and thus corresponds with a
reduction in the load capacity requirement on the strategic network. The severity
however is considered to be high.
6.15 The impact Runnymede's Local Plan will have on the SRN [Risk IDPR006] is being
assessed in the SCC TIA 2012 (expected end of November 2012). It is considered
likely however that the TIA 2012 will confirm that any increase in traffic on the SRN as
a result of the forecasted development in the Local Plan coming forward will not
significantly impact on the SRN.
6.16 In summary three risks are identified which are summarised in the table below.
Conclusion
Risk ID Description Probability Severity
IDPR004
IDPR005
Failure to achieve sustainable transport
strategy
Effect of climate change on network
capacity
High
Low
Medium
High
IDPR006 Impact of RBC Local Plan on SRN Medium Medium
6.17 Development proposals over the plan period are likely to place some additional
pressure on the SRN routes which run through Runnymede. It is considered
reasonable to assume that pressure on the SRN will come from the increase in
development across Surrey and the London Fringe sub region generally however
rather than the development proposed in Runnymede in isolation. This is however a
tentative conclusion at this stage and can only be verified once the TIA 2012 has been
completed.
6.18 Of the three identified risks, IDPR004 is likely to be the only one that RBC could
reasonably influence. The other identified risks lie outside the Council’s control.
Non-Strategic Road Network
Existing conditions
6.19 The non-strategic road network comprises A roads (non trunk), B, C and D roads which
connect the various settlements within the Borough as well as areas outside the
Borough boundaries. Significant routes within the Borough which lead into the SRN are
identified as follows (and are shown in Figure 11 above):
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Runnymede IDP DRAFT – February 2013