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Complementary instruments
CTPs cannot, on their own, serve to achieve all objectives or to alleviate
all problems. Instead CTPs should be viewed as a potential part of an
integrated set of complementary policy instruments, whereby each instrument
plays a part in achieving the policy objectives or in alleviating transport
problems.
Instruments may complement one another in two principal ways: firstly
by overcoming each other's adverse side-effects; and secondly by re-enforcing
each other's benefits. Complementary policy instruments sets out the different
policy instruments which could complement CTPs.
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