Pre-sorting area
The pre-sorting area (also pre-sorting strip or simply sorting area ) describes the additional lanes and lanes in a junction approach. This structural measure serves to handle large traffic loads and to ensure traffic safety. Any obstruction to straight-ahead traffic caused by turning-in and turning-in is reduced. In the pre-sorting area, road users have the option of classifying themselves according to their desired direction. For this purpose, left-turn and right-turn lanes are arranged. The number of turning lanes depends on the volume of traffic to be handled and the flow of turns. The lane marking line is still interrupted in the pre-sorting area, but it is drawn through at the junction itself. Directional arrows are usually marked on the roadway for a better overview .
The pre-sorting area or the turning lanes serve as so-called storage space at intersections . These are lane areas that can be occupied by vehicles that are waiting to be cleared for travel. The length of the storage space is measured by a corresponding calculation and significantly influences the performance of a junction. Too little storage space impedes the flow of traffic, too much storage space leads to unnecessary use of space and is uneconomical.
If there is a traffic light , a stop sign or the " Give way" sign at the intersection , the pre-sorting strips are terminated with a stop or waiting line .