Text to speech (TTS) refers to navigation instructions spoken to the driver by the Waze application. They are aligning (if all is well) to the visual prompts given in screen.
The instructions given at a specific point on your route are a combination of default instructions, and the given primary name.
If you encounter wrong pronunciation in Belux, you can report it in Slack channel #63-bl_tts.
Default Instructions
Default instructions are generated by the Waze engine based on road type, angle of the connection between roads and all kind of other things. E.g., a segment that is connected in 90 ` corner, will elicit a 
"Turn right" or 
"Turn Left". A ramp generally elicits `Exit to`, except when it is exiting the opposite way compared to the traffic direction. Roundabouts have their own set of instructions.
If you want to learn more about the default instructions, there is a great page written by editor PesachZ from USA about Turn, Keeps, and Exits. If you just want to check the default instructions, follow this scheme.
With turn instructions overrides (TIOs), these default instructions can be altered. If the pronunciation happens to be incorrect, we need to change it in TTS. There is a team maintaining this. Discussions are open in Slack channel #63-bl_tts.
Primary Name
For the primary name, we can change the pronunciation in TTS.
Abbreviations and symbols
To shorten the length of primary names, we can use the following symbols or abbreviations that will be pronounced as full words by TTS
| Abbreviation or symbol |
translates to | remarks | |||
|---|---|---|---|---|---|
| English | Dutch | french | German | ||
| > | in direction of | richting | en direction de | richtung | used mainly on ramps |
| Prof. | |||||
| Dr. | |||||