User:Abc1357/LG

Lanes

Details on Lanes and how to map them can be found on the Lanes Wazeopedia page. Editors should consider using the Lane Tools script to assist in mapping lanes correctly.

In California, Lanes should be mapped for major intersections where the number of turn lanes deviates from what is expected. In other words, do not map if you can turn right from the right lane and/or you can turn left from the left lane. regardless of whether these turn lanes are dedicated lanes or shared lanes.

Intersections where you should map Lanes:

• There are multiple left or right turn lanes
• In a # or H junction where there is a U-Turn.  The addition of lanes for these types of junctions combined with lane heuristics enables Waze to announce a U-Turn, rather than a Turn Left, Turn Left.

Special Considerations

At-Grade Connectors

When adding Lanes, please consider whether AGCs are still needed at that intersection.

As an example, the AGC from westbound Walsh Ave to northbound San Tomas Expwy is not needed. The island is extremely small. The benefits that the AGC was originally meant for, such as advanced announcement of the turn, are not needed.

Picture here (not uploaded to Wazeopedia yet):

Special considerations

Lane specific guidance

There are intersections where users should be guided to the proper lane in preparation for the next maneuver. Consider a driver going from Crow Canyon Pl to I-680 N. There are 2 left turn lanes on Crow Canyon Pl. An editor following lane mapping guidance would map that intersection with 2 left turns. A driver unfamiliar with that area could potentially turn using the left lane of the 2 left turn lanes and miss the entrance to the FW if there is a lot of traffic turning left in the other lane.

Picture here (not uploaded to Wazeopedia yet):

In order to properly guide the driver, some sort of compound guidance such as "Use the right of the two left turn lanes to turn left and then turn right to enter the FW" would be ideal. Unfortunately, Waze does not have this capability.

Loss of lane

Another consideration is where two close-by intersections have dedicated turn lanes, but in between the two intersections, a lane is added such that the driver going to the second intersection could mistakenly enter the wrong lane. Consider a driver on Mission Blvd being guided to NB I-680. There are 3 full lanes prior to the entrance to NB I-680 with the right lane dedicated to the exit.

Picture here (not uploaded to Wazeopedia yet):

At the prior FW entrance to SB I-680, there are also 3 full lanes prior to the entrance with the right lane dedicated to the exit.

Picture here (not uploaded to Wazeopedia yet):

Note that since Lane Guidance is announced about ½ mile for MH and ¼ mile for mH and lower prior to the turn instruction, the driver would have heard "In ½ mile, use the right lane to turn right to I-680 North Sacramento" at around Warm Springs Blvd, which is 2 signaled intersections prior to the entrance to northbound I-680. There is no signage until you are almost at the entrance to southbound I-680. A driver, upon seeing or hearing the guidance, would get into the right lane and would not have much distance/time between the last signaled intersection to the entrance of southbound I-680 to change lanes, especially when there is a lot of traffic.

Picture here (not uploaded to Wazeopedia yet):

In order to properly guide the driver, there are a few possibilities. Waze could delay announcing the Turn instruction to northbound I-680 until the driver is past the entrance to southbound I-680. A better solution would be for Waze to announce "In ½ mile, stay in the middle lane and then turn right to I-680 North Sacramento". Unfortunately, Waze does not have this capability.

What can be done for these situations?

• Consider whether the lanes should be mapped.
• Review intersections prior and after to ensure the Lane Guidance would not unduly cause confusion for the driver.
• Place a Map Comment so that if Waze adds the ability to map compound lane guidance, we can properly map these locations.