When I have a turn or going to a junction , The WAZE knows how much meters I need to arrive to the point where i turn or change lanes , So this is the deal , while driving you can see how much meters or kilometers , you need till the next turn in addition to that the APP knows The speed of the driver , SO if you run this math -> S/V=T which is the time that i need till the point , so the APP will tell me that in 15 seconds (when T=15) to say , that there is a turn or to move to the nearest lane on the road ; and when (T=7) Tell driver that in 5 seconds you have to go right or left , when a driver is easier for him to know time he wont get wrong count , but by seeing meters you wont be able to mature it and to keep hands & eyes away from the phone , Its All About Listening also Focusing on the road ! less accedents and less problems !