Lane Guidance

Waze does not expect or want Lane Guidance to be applied to every available junction with multiple lanes.

Considerations for Lane Guidance

Lane Guidance will appear in the client approx 1km in advance of a junction for mH road types and above, 500m in advance for lower road types.

Keep left / keep right junctions

Using current rules for keep left / keep right, Lane Guidance should not be added to simple motorway or highway junctions (exits) unless there is it meets the requirements for KL / KR.

Lane Guidance does not currently have text-to-speech so any existing KL / KR TIOs added to the map should be retained.

Complex junctions

Lane Guidance should allow us to simplify many complex junctions making the map cleaner and clearer in the client. When simplifying a junction you should consider how it may affect routing through the junction. Additional turn lanes are often physically mapped to better control u-turns, you may wish to remind yourself of how to control u-turns at H and # junctions.

Lane Guidance is currently limited to the Beta client (April 2020), simplifying complex junctions at this time may lead to issues for the production client so is not advised.

Lane Guidance limitations

Lane Guidance can only be added to segments that have more than one exit direction.

Lane Guidance can not be added to roundabouts.

(Heuristic) Lane Guidance does not current work within Junction Boxes. In preparation for Lane Guidance through Junction Boxes ensure that all turns are allowed within the junction box and routes controlled solely by the Junction Box.

Lane Guidance should never be used when a single lane is used for all directions, nor should Lane Guidance ever contain more lanes than are available to the user.

Adding Lane Guidance

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1. Select the segment
2. Click on the Lanes tab
3. Click Add lane guidance for the appropriate direction of travel (you may only see 1 option)
4. Change the number of lanes to match the road layout (in the direction of travel only) at the point of the exit node

• The choice of Lane Guidance turns shown for each segment is initially determined by the angle of the exit segments, snapping to the nearest 45 degree angle

• This is not the same angles as used for verbal instructions, using the JAI script will help but is not always correct for Lanes. Example: Straight on (not instruction); Verbal: ±45 degrees from straight, Lanes: ±22.5 degrees from straight.

Select the lane check box(es) that apply for each of the generated turns

• You can override the suggested lane guidance directions by clicking on the arrow image for each group of lanes

Disabling a turn with Lane Guidance will delete all store information, if the same turn is re-enabled in future Lane Guidance will need to be input again.

Changing the angle of junction segments that already have Lane Guidance may lead to issues with how Lane Guidance is displayed in the app. It is advised to add a Map Comment to junctions that include Lane Guidance

Do not split segments to provide Lane Guidance in advance of a junction, this will cause a loss of any and all Lane Guidance data on the segment.

H / # Junction mapping

For H or # junctions that are mapped at 90 degrees, have parallel segments, and have a median segment of 30m or less, Waze will combine Lane Guidance, using a heuristic approach, to give the appropriate images depending on the direction of the route through the junction. The Lane Guidance should be mapped in sections through the junction as shown below:

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  1. Add Lane Guidance approaching the junction

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  2. Add Lane Guidance to the median segment

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  3. Heuristics will combine them for the client

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  4. All directions mapped

Turns suggested by WME will not include u-turn option, this is created automatically by the system.

You should always add Lane Guidance to the entire H or # junction to ensure the heuristics work correctly and to prevent any unwanted instructions from an unmapped direction. Heuristics will not work for more complex junctions or those that do not fit the stated criteria.

Removing Lane Guidance

To remove Lane Guidance, simply select the lanes tab for the segment, then edit lane guidance, then change the number of lanes to zero (0).