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Interactive junction instruction algorithm
This will be a clickable interactive guide to determining what instruction, if any, will be given at the junction between any 2 segments. There will eventually be encyclopedia style illustrations for the various configurations to visually describe the setup. This will formatted as a sequence flow through, to cover (hopefully) all variations.
Understanding how and which instructions are provided requires first understanding a few concepts.
- This page is discussing the instruction which will be provided by the Waze server (or not provided) when travelling from one segment, through a junction, and onto a second segment.
- How Best Continuations work. Any time the destination segment is the Best Continuation there will not be an instruction provided.
- The segment you are on before going through the junction, in other words the segment you are coming from will be referred to as the origin, and corresponds to s-in in the the algorithm text provided by Waze staff.
- The segment you will be on after the junction, in other words the segment you are going to will be referred to as the destination, and corresponds to s-out in the the algorithm text provided by Waze staff.
- Any segments other the destination which leave the junction at an angle less than 44° will be referred to as other branches, and corresponds to s-N, or s-1,2,3,4... in the the algorithm text provided by Waze staff.
- When the beginning portion two segments are directly on top of each other, meaning they both leave the junction at the exact same angle as each other, they will be referred to as an overlapping segment.
The interactive algorithm
There will be No instruction given passing through this junction.
The instruction in a right hand drive country will be Exit right.
In a left hand drive country this instruction does not exist, and will instead give a Keep/Stay_Right instruction. A junction with this exact setup but a left angle turn would give an Exit Left instruction in a left hand drive country.
The instruction in a left hand drive country will be Exit left.
In a right hand drive country this instruction does not exist, and will instead give a Keep/Stay_Left instruction. A junction with this exact setup but a right angle turn would give an Exit Right instruction in a right hand drive country.