osittelija

The osittelija is a Finnish word that refers to a traffic condition in which a traffic flow is divided into strips, or "osin", which are separated from each other by a gap called a "sisäkkö". This traffic condition is often used in attenuated traffic flow where the speed of the traffic is high, typically on highways or motorways.

The basic operation principle of the osittelija involves multiple traffic streams being created, each moving in the same direction. The spaces between these streams are left vacant, allowing for a smooth flow of traffic. The gap between the streams is continuously moved forward by incoming traffic, creating a fluid movement of cars.

The osittelija was developed in Finland as a solution to reducing congestion during peak hours. The idea behind the system was to increase the overall capacity of the highway by distributing the traffic flow into different streams. The use of gaps between each stream also allows for efficient merging and exiting of traffic from the highway.

The osittelija uses a system of traffic control which is based on physical queueing theory. The shortest expected headway between the individual streams is typically in the order of 2-4 seconds. For maximum efficiency, the length of the individual streams should not be too long, typically not exceeding 20-30 meters.

Using the osittelija system, traffic flow can be significantly improved in high-traffic areas, leading to a reduction in travel times and easing traffic congestion. Its effectiveness relies on proper design, road marking, and attentive driving by both professional and private drivers.