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  02.11.2018, 13:24h

Traffic light for safer passage over Roški slap waterfall

Since the start of the week, passage over the bridge at Roški slap has been controlled by a traffic light in a traffic-dependent regime.

In order to increase driver and pedestrian safety at the only car crossing at Roški slap, the Public Institute of Krka National Park, in cooperation with the County Roads Directorate from Šibenik, has installed a traffic light to effectively avoid cars from having to bypass one another and drive backwards. For more pleasant waiting, the traffic light also includes a countdown in seconds, in order for traffic participants to see the remaining time for the light to change.

The traffic light is programmed to change at 160 to 200 seconds, depending on the number of vehicles detected by the radar detector. The time diagrams were created based on the assessed traffic load. Each direction receives a minimum of 10 sec to a maximum of 4x5 sec of green light, and due to the large span (bridge length of 380 m) and the slow driving speed of vehicles, the protection time is a minimum of 70 sec. The total wait time is therefore from 160 to 200 seconds, and the traffic light works in this programme for 24 hours. If the traffic on one side is more intensive, the green light is extended to the maximum time limit for that direction, 40 seconds. If there is no traffic, the light shines red on both ends, and only turns green upon detection of a vehicle.

The new horizontal and vertical signalisation has retroreflective properties in accordance with the legislation, and new stop lines have been drawn onto the road, and vertical signs installed warning of the traffic light.

The traffic study confirmed that the county road ŽC 6246 at Roški slap was not compliant with the permeability requirements due to the narrow width of the road and constant circulation of pedestrians, particularly during the summer months. The average width of the road is 5 metres, which disables cars from bypassing one another, leading to traffic jams and long waits, and therefore it was decided that this should be resolved with the installation of a traffic light.