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VISION: Road Transport in Europe 2025 - FEHRL

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56<br />

In the Ideal-World scenario user stress would be m<strong>in</strong>imised through the provision of a well ma<strong>in</strong>ta<strong>in</strong>ed<br />

comfortable transport system, offer<strong>in</strong>g seamless journeys by the most appropriate modes at a fair and efficient<br />

price.<br />

RELIABLE Travel<br />

Requirement<br />

For the <strong>in</strong>frastructure to be reliable there should be no surprises. Any disruptions that occur should be<br />

predicted <strong>in</strong> advance and measures taken to mitigate their effect on users.<br />

Developments<br />

Ma<strong>in</strong>tenance is likely to be planned <strong>in</strong> advance and traffic flows predicted. Ma<strong>in</strong>tenance works may <strong>in</strong>volve the<br />

provision of temporary structures or temporary roads <strong>in</strong> heavily congested areas. Heavy traffic flows might be<br />

accommodated by revers<strong>in</strong>g lane flows when the majority of the traffic is <strong>in</strong> one direction. Whilst <strong>in</strong>dividual<br />

accidents cannot be predicted, once an accident occurred it would be promptly detected and effective<br />

cont<strong>in</strong>gency measures should be put <strong>in</strong> place to m<strong>in</strong>imise disruption. Prior plans on a 'what if?' basis should<br />

be developed for a wide range of possible accidents.<br />

Preconditions<br />

Increas<strong>in</strong>g reliability can only be achieved if current models for predict<strong>in</strong>g when ma<strong>in</strong>tenance is required to<br />

the road <strong>in</strong>frastructure can be developed further. Thus a number of conditions will need to be satisfied, as<br />

follows: the development of construction methods that enable replacement of road <strong>in</strong>frastructure at the end<br />

of its service life to be fast and effective, and of improved ma<strong>in</strong>tenance techniques that enable ma<strong>in</strong>tenance<br />

to be undertaken quickly and effectively; an understand<strong>in</strong>g of user attitudes to reliability and uncerta<strong>in</strong>ty; and<br />

an ability to predict responses to network disruption and congestion.<br />

Path to Implementation<br />

Under the Do-Noth<strong>in</strong>g scenario journey times would be unreliable. It would be left to <strong>in</strong>dividuals to avoid the<br />

worst conditions.<br />

The Government-Led scenario would use traffic management measures to limit congestion such as advanced<br />

traffic surveillance and management systems for example lane mark<strong>in</strong>gs to aid flow and speed management<br />

to prevent shock waves. There would also be <strong>in</strong>centives to encourage the use of public transport and the use<br />

of different modes.

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