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Speed Limit Alerts
Note: Speed Limit Alerts is in testing stage. Please expect bugs and errors.
At all times obey the posted speed limits.
To use
- Click Start and the speedometer will start showing your speed in km/h
- Select the speed you'd like to receive an alert if exceeded. In Victoria
you can select Auto which uses speed limit sign locations.
- You can change the alert speed at any time.
- To report a mobile speed camera, a police car/officer recording speeds, or a mobile phone seatbelt camera, click
on the appropriate button
Features
- Large speed and speed limit numbers for easier checking.
- Speed background green when within 5km/h of speed limit. Red when over the speed limit.
- Speed limit background yellow for variable speed signs and orange for roadwork.
- Ability to report mobile, police and phone/seat belt cameras
- Verbal alerts when exceeding the speed limit or approaching cameras.
- Verbal alerts for fixed red light and speed cameras only for the direction of travel affected.
- School zone speed limits for time of day and school days only.
- Time of day restricted speed limits such as near shops.
- Night or day mode.
- Mobile/Police/Phone Seat belt Camera locations updated every five minutes based on the day's reports.
- Share Score with family and friends. Start with 100 points and lose a point for each speeding alert.
- Works the way you do if using Auto. Speed is only known based on Speed Limit Sign locations.
- Nothing to install on your mobile phone. Add Home screen shortcut for convenience.
- Android stays always on. iPhone requires Auto-Lock set to never.
- Large numbers can be read when wearing polarising sunglasses.
- Extra features for specific purposes listed below.
NOTES:
- At all times obey the posted speed limits. This web app is an aid and may/will be incorrect at times.
- The speedometer reading is updated as the GPS location is updated, which can vary from
sub second to taking multiple seconds.
- GPS locations are not available in tunnels and
may not be reliable under bridges, in car parks and where there's other obstructions.
- Speed limit sign data can be incorrect,
out of date, or missing.
- A verbal alert to slow down occurs when the alert speed selected is exceeded by 1 km/h for two GPS readings.
- The speed background changes to red when the alert speed selected is exceeded by 1 km/h and the speed
changes to white.
- The speed background changes to green when the speed is between 5 km/h under and up to 1km/h over
the alert speed selected, or if on auto, the most recent speed limit sign.
This provides a good visual clue you are travelling near the alert speed selected.
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The Speed Limit background will change to yellow when travelling on freeways with variable speed signs.
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Speed Limit background will change to orange if travelling through
an area of roadworks. In particular roadworks that are long term. There are many large projects underway
around Melbourne and with Victoria testing construction zone speed cameras, it was felt including
long-term sites with roadworks may assist drivers keep to the posted speed limits. Not all roadwork
areas will necessarily be covered due to their changing nature. Short term roadworks are not included.
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You can select a speed, which if exceeded you will then be alerted. In Victoria you can use the auto feature,
which uses the Victorian government's speed limit sign data plus a significant number of updates and corrections
to the governments data. Whilst the quality of the government's data is not ideal, it has enabled this project
built more quickly. Depending on the interest of from users of Speed Limit Alerts, it may be possible to build
a better quality source of data.
- Spurious/inaccurate GPS readings are common on mobile phones and can cause over the speed limit warnings
- When stationary sometimes the speed will will drift and be non-zero. This because the GPS reading is changing.
To avoid this issue speed and bearing updates at 3km/h or above. This can mean a nearby sign when turning can be missed
and the turn does not reset the speed limit to unknown.
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Fluctuations in the GPS signal can cause the speed limit to become unknown as shown by two dashes.
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Curves in the road are generally handled well but sharper curves, or hair-bend turns can cause the speed limit
to revert to unknown.
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The default limit on suburban roads in Victoria is 50km/h. Because generally suburban streets have no speed limit
signs, the speed limit will be shown as unknown and is not detected.
- Most existing apps only use the default speed for roads and schools. Speed Limit Alerts includes standard speed limits
that don't change, school zones that change twice each day during school terms, speed zones near shops which
are restricted during part of the day, for a number of days of the week.
-
A moon and a sun button provide a black or white background. The black background is useful at night
to reduce the light from the screen. Sometimes however you may also need to manually reduce
the brightness.
- Share your score with family and friends. At the end of each drive you can share a summary of your score,
start time, end time, elapsed time and distance travelled. Your score starts at 100 and is reduced by one for
each alert you hear for exceeding the speed limit. The Share Score features uses the built-in share feature
of the mobile phone. Not all options work. A title line, body for the message and URL for this web page is
shared. What works and doesn't work may differ between iPhones and Android based phones.
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On Android devices Speed limit Alerts stays on whilst the program is running, that is Start has been pressed.
On Apple devices you'll need to change Auto-Lock to never, otherwise the iPhone will go into Auto-Lock.
In Settings -> Display -> Auto-Lock select Never before running Speed Limit Alerts and return
the Auto-Lock time back to your preference when the drive is complete.
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On Android set the mobile to answer calls by showing a pop-rather than the full screen.
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Should you switch to another application Speed Limit Alerts will stop running until you return
focus to Speed Limit Alerts.
Reporting cameras
The buttons provided enable people to report mobile speed cameras, police held speed cameras and mobile phone seatbelt cameras.
They should not be used to report the location of police performing others tasks and this web app is only useful for
speed related matters and mobile phone seat belt cameras.
Should you accidentally report a camera, please click on the Undo button and this will indicate
it is an error and can then later be easily recognised and removed from the data.
Each day reported cameras starts fresh for the day.
If you drive towards a mobile camera, police camera, mobile phone and seat belt camera, or a fixed phone and seat belt
camera an alert will be spoken as to the type of camera.
Known fixed phone and seat belt cameras are automatically included in the list of cameras.
Reporting an issue
A button is provided where you can report an issue such as a new fixed speed camera, a speed limit sign that is missing
or has the incorrect speed. If you think something is worthwhile to report, please report the issue.
Other features not shown by default
The Speed Limit Alert web app contains a number of useful features disabled by default that can be enabled
using parameters included in the website address. The first parameter is prefixed with a "?" and further
parameters are prefixed with an '&'. For example to enable the beep for speed limit signs and test
the URL to use would be www.SpeedCameraLocations.com.au /speedlimitalerts/?beep=true&test=true to beep for speed signs
and to show the bearing and speed sign Id.
- beep - Beep when passing a speed limit sign
- test - The bearing you're currently travelling as well as the bearing for the speed sign and the speed sign Id.
- log - Sharing logs to help identify issues and also the raw GPS data. The size that can be shared is limited by
the system and beyond my control.
- report - A section showing buttons to report speed limit signs for those who wish to help build the data
for areas where speed limit sign information is not available.
Privacy and you information
Any location technology you use on your mobile phone, including the cell phone towers, bluetooth, Wi-Fi and GPS can
be used by the hardware and software providers to provide that data to other companies and government
agencies. I can't do anything about that data.
However, my Speed Limit Alerts web app does not collect any data you do not personally submit. For example when you
submit a mobile phone camera only the date/time, location, type of camera and IP address (used to match data for the Undo function)
is collected and used by the system.
If you send me an issue report I'll act upon the issue, contact you and then delete your information. I have no desire to
collect anyone's information. Having said that, the shared hosting service I use, does record all interactions on my websites
and that information if used, may potentially identify an individual device, but not the individual.
Essentially it is not my aim or desire to collect, store, share or transmit people's data. My only desire is to provide
a tool that is useful to myself, friends and others who wish to use it. Advertising on the web pages is used
to help compensate me for my efforts.
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Disclaimer
Speed Limit Alerts comes with no warranty express or implied. It is not guaranteed to be error free or suitable for any
particular purpose.
Speed Limit Alerts - Copyright © 2024 Online Connections
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