Opened 15 years ago

Closed 14 years ago

#75 closed defect/bug (fixed)

The voice message "Turn right/left NOW" comes too late

Reported by: hafting Owned by: somebody
Priority: major Milestone: version 0.2.0
Component: core Version:
Severity: Keywords:


A navit conversation typically goes like this: "Turn left soon" "Turn left in 200 m" "Turn left now"

("Soon" is wrong when driving in a city - "turn left in a while" is what it feels like.") But that is just words.

The real problem is timing. I usually get the "turn left now" message in the middle of the intersection, I am already making the turn.

The message needs to come earlier, so the driver have time to react. Plus some time to make up for gps inaccuracy (and similiar map inaccuracy. Perhaps map inaccuracy needs to be a parameter in the xml file. Those with a good map don't want the messages too early, those with a bad map don't want to be told what turn they just missed half the time.)

The driver needs time to hear the entire message+reaction time. Message time vary with language, but perhaps it can be tested by timing the messages during compile? Message distance can then be computed from current speed.

Then there is the reaction time. The driver may need to brake from high speed, especially if it is a hard turn. Motorways usually don't need braking before the turn, but a good map should show the turn as a slow turn and tag the road as motorway anyway.

Change History (2)

comment:1 Changed 15 years ago by KaZeR

  • Milestone set to version 0.0.4

comment:2 Changed 14 years ago by Tinloaf

  • Resolution set to fixed
  • Status changed from new to closed

This should actually have been fixed when we changed the navigation.

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