High vehicle speeds past roadwork zones put both road workers and road users at risk. In order to gather ideas from employees on how to improve safety at roadworks the Swedish Road Administration organised a "Hunting for Ideas" campaign. Over 130 proposals were submitted, of which traffic calming and traffic control for two types of stationary work zones were selected for testing. The first involved traffic calming at short-term stationaryroadworks zones on roads with one traffic lane in each direction. A reduction in speed was found for all the methods tested. The second proposal involved convoy traffic management where median barriers were being repairedon "alternating 2+1 lane roads". In connection with a test demonstration,an opinion survey revealed that drivers generally considered the convoy method to be good, with a large percentage indicating a preference for thismethod. A traffic simulation test showed the maximum traffic volume that could be controlled in this way without causing unreasonably long delays for road users. For the covering abstract see ITRD E139491.
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