Updated
Safety notes for TuJu
A navigation app does not replace road signs, a speed limit, or a 999 call. Use TuJu before you move, and let a passenger handle the screen when traffic is stacked.
Eyes on the road
TuJu is allowed to be wrong. You are not allowed to be looking at it when it is. The useful time to study a route, a toll, a camera, or a rest stop is before the car is in gear, or from the passenger seat. A glance at a mounted phone for a prompt you already expected is different from watching a video of a queue while you are in one.
If you feel the need to stare at the screen to work out which ramp is yours, the app has already failed that junction. Stop looking. Follow the lane arrows and the gantry. Sort the route out at the next legal stop.
When the prompt is wrong
Testers and other drivers, in October 2026, saw three bad shapes: a prompt that only said "keep straight" or "merge", a line drawn across the map that did not follow the road, and an instruction that appeared as raw HTML. None of those is a direction. HTML on the screen is a bug. A straight line across neighbourhoods is a bug. "Keep straight" at a fork is not enough information.
The road furniture is the system that was designed for this exact place: the gantry, the painted arrows, the exit number, the kilometre marker. Prefer it. LLM has said it is reviewing route accuracy. Until that review shows up as a prompt that names your exit in time for you to change lanes, drive as if the voice might be late.
Mount, passenger, speed
There was no Android Auto or CarPlay in the October test, and no speed-limit warning. Assume the app will not show the limit and will not appear on the car screen. Read the speed signs yourself. Mount the phone high enough that a glance does not drop your eyes to your lap.
If you are tired, in heavy rain, or in a festive crawl, the app does not add skill or shorten the queue. It can help you choose a rest stop. Taking the stop is the safety decision. The R&R tools are described on the tolls and rest stops page.
Battery and signal
A dead phone is not a backup navigator. The iPhone listing warns that location may run when TuJu is closed, which costs battery even after the trip. Plug in for a long highway run. If you do not want background location, set the system permission to While Using and check it again after the first prompt, because apps ask twice.
Tunnels, stacked expressways, and deep cuts will drift a GPS dot. When the dot and the road disagree, believe the road. If the whole service is down, you still have signs, and you still have 999. The app is not a condition of being allowed to drive.