User:Nagamasa/Turn instruction override
WME provides an ability to override the turn instructions provided during navigation so that editors can customize those instructions to better match the reality of the road.
Use a turn instruction override whenever the default Waze selected instruction is not the desired instruction for the driver. The TIO replaces the default Waze selected instruction entirely, including the TTS and instruction list.
|Don't worry about replacing existing intersection designs that currently produce the desired instruction, but using other means of doing so (such as micro-doglegs and a virtual stub segment). We can get to those as we need to.|
- 1 Creation
- 2 Available options
- 3 When to use
- 3.1 U-turn
- 3.2 Turn
- 3.3 Exit/keep
- 3.4 Continue
- 3.4.1 Unannounced roads with legal or financial implications
- 3.4.2 Setting context in the instruction list
- 3.4.3 Supplement a wayfinder
- 3.4.4 Best continuation is not the obvious continuation
- 4 When not to use
- 5 Identifying on the map
|Before you set a Turn Instruction Override, It is highly recommended that you consult with a State Manager or other senior editor.|
When in WME and you click on a segment and hover over a green or yellow turn connection/restriction arrow, both the Time-based Turn Restriction (TBTR) clock and the Turn instruction Override (TIO) speaker icon will appear. If the turn is red (restricted), then the override icon will not appear.
- Waze Selected (default) (this gives the default voice prompt)
- None (No instruction is given)
- Turn left (The instruction "turn left" is given)
- Turn right (The instruction "turn right" is given)
- Keep left (The instruction "keep left" is given)
- Keep right (The instruction "keep right" is given)
- Exit left (The instruction "exit left" is given)
- Exit right (The instruction "exit right" is given)
- U-turn (The instruction "make a U-turn" is given)
When to use
This works well for one way segments that have a u-turn only lane. You can post a "u-turn" verbal prompt on the first left turn and "None" on the second one.
Streets not meeting at right angles
When streets meet at some kind of diagonal, the default turn instruction may end up being a "stay to the left/right" even though the driver would consider it a left or right turn. Allow the segments to meet at their actual angles and create an instruction override so that the instruction the driver is expecting will be given.
Also consider: The departure angle in Waze Map Editor is also shown in the app closure interface. Angles which are too close, under 20° can overlap in the app, and so should be avoided.
Depending on the length and angle of an at-grade connector, it may make sense for Waze to instruct "keep right/left" or "turn right/left". Use a TIO to ensure the app voices the most appropriate instruction to the driver. An example of an at-grade connector using an instruction override is shown below:
When there is a the Big Green Sign (BGS) indicating an exit left. Discuss with your Regional Coordinator(s) and/or State Manager(s) to see if they want it added to locations where a HOV or HOT/Express Lane is separated from the regular freeway, highway, etc.
Simple wayfinders use a turn instruction override where an instruction would not normally be voiced. This is most often a "stay right" or "stay left." A basic example is a roadway with a split where left lanes turn left and right lanes go straight ahead. To ensure the driver is kept on the correct side of the roadway to stay on the expected route, we create an instruction override to ensure the driver is given enough advance noticed to make sure they are on the correct side
The image here is a composite showing both turns with the override set and which instruction has been applied in this specific case. Drivers continuing straight, the app will give the driver the instruction "stay to the right to El Cajon Blvd." For drivers getting into the on-ramp, the app will say, "turn to the left to I-8 W."
A default surface-road-to-on-ramp "exit" instruction may be overridden with a "keep" in rare cases when:
- the originating highway's continuation path is unclear (such situations often require wayfinders as well) or;
- the on-ramp's initial departure continues to share direction and pavement with the originating highway, either for an unexpectedly long distance, or leading to two or more subsequent distributor on-ramps that are better instructed as exits than the initial departure. The latter application avoids issuing multiple "exit" instructions for what is effectively the same on-ramp. Aside from the above situations, overriding the default "exit" instruction for surface-road-to-on-ramp departures is not encouraged (see below).
Unannounced roads with legal or financial implications
Restricted areas (border control point, military base)
When the best continuation is to a restricted area, add a Continue TIO, paired with a wayfinder, to let users know they will be now entering a restricted area.
Setting context in the instruction list
Without a Continue TIO, the next instruction could be from an entirely different road or freeway. Adding a Continue TIO would help set context as to where the instructions are and increase the Wazer's confidence in the instructions given (or not given).
Terminus of a freeway
When possible, do this at a point where the user can use this TIO to make a mental confirmation. If the continuing freeway is signed before the termini, place the TIO at the last exit. If it isn't signed, place the TIO where the freeway merges into the next freeway.
Consult with your state manager if the freeway status changes frequently or gradual, or if the freeway itself is insignificant.
On-ramp to a freeway
When the best continuation from a road (including off-ramps, parking lot roads, and rest areas) is an on-ramp to a freeway or expressway, add a continue TIO.
Continuing from an off-ramp
Use a Continue TIO when the name of the continuation off of a ramp is not immediately obvious because it was:
- not previously named on a sign and or TTS, or;
- named, but not otherwise indicated or obvious that it is in fact the road that continues straight (vs. a turn)
Supplement a wayfinder
Because controlling the turn angles in Waze will never produce a continue instruction, a Continue TIO must be set in places where a wayfinder is warranted for a particular direction, but "keep" or "exit" would be misleading.
Add a continue TIO when:
- all travel lanes are correct--telling a user to keep or exit would mean an unnecessary lane change to that side of the road out of caution, or;
- only the center lanes are correct in a 3+-way fork is correct
Best continuation is not the obvious continuation
Many times, when there are many turn lanes, many vehicles turning, and a plethora of signage, and straight ahead doesn't look like the right way to go, the Wazer may be hesitant that Waze is not issuing an instruction. Add a continue TIO to help assure the Wazer that continuing straight is the correct way.
Use selectively, and consult your fellow area managers for consensus.
When not to use
You don't like the Waze default
Don't use a TIO to override the default just because you don't like it. We can't manage changing thousands and thousands of intersections like this.
Override is the same as Waze selected
Do not set a TIO if the override would be the same instruction as the Waze-selected one.
A complex wayfinder is one where the legs (s-out) are named differently than the subsequent segments. The wayfinder segments are named for the Big Green Sign (BGS) verbiage for clarity.
For these kinds of wayfinders, a turn instruction override alone does provide sufficient clarity. Use in conjunction with a wayfinder.
An "exit" instruction for common on-ramp departures from surface streets, while not immediately intuitive for many new Wazers, is nevertheless Waze's current default. Overriding this default on a large scale could lead to problems. Meanwhile our only alternative, the "keep" instruction ("stay" in some voices), is not always significantly clearer. Except for rare cases, overriding the default "exit" instruction for on-ramps is not encouraged.
Keep calm! Our Wazers have memory better than a goldfish. They don't need to be reminded to Continue straight at every intersection. Wazers are already told when or how far their next turn is after every turn.
Not impactful or unsigned name changes
Keep the turn instructions useful; don't announce simple road name changes such as when a neighborhood road changes name or if the cardinal direction changes.
Similarly, some freeways are unsigned. We do not need to place TIOs when these begin or end, as they provide no value to the Wazer.
Intermediate barrier tolls
In keeping instructions useful, it would be superfluous to inform a Wazer of each and every intermediate toll barrier in a barrier-toll system.
Identifying on the map
- The default way to determine that a turn has an override set is to hover over the turn arrow.
- Toolbox helps to make identifying turns with override instructions set.