palmerit wrote:People generally drive slower over rough roads. Waze already learns average speeds. Taking accelerometer readings would be difficult at best. Two cars going over the same road, one being a high end luxury far and one being a classic car.. are going to give two very different readings.
Why not let Waze do what it does, learning average speeds? I don't know any mapping solution that reports rough roads and frankly... I think there are other things that Waze can and should prioritize.
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Who told that such things are easy? Waze is not easy. But You can win only if You have more and more unique features. Would I download Waze if it had all same features as other navigators do? - Not. So don't please look at others and think what else waze could be useful for. Waze is not only about navigating, but giving useful info about road You are willing to take.
My argument against Your's: At different conditions wazers could drive at same spead, esp. where speeds are limited, or there are other (permanent/non-permanent) reasons for slowing down. Or for example - country road is flat and smooth, but dusty or slipery. In such case You (probably) still will be limiting Your speed, but not spoiling car or waking Your child. Other argument is that characteristics of different cars are different and in bad conditions speeds can be very different and not telling about condition of road. Agree?
I would not waste my time here if this feature could not be useful at least for me.
I agree that different cars will act differently on same bad road, but for that we have techniques of filtering, interpolation and other methods. Maybe it seems more difficult then it really is after exploring a bit.
Maybe some mobile application developer could contribute with prototyping such module wich could be tested on different cars on same bad roads, analyzing these differences, problems, cases/scenarios. Unfortunately I am not coder but I am experienced in leading projects and generating ideas for solution. It could be some parallel project, maybe even interesting for students and researchers and then, after it ready and trust-able, implemented in waze application and system.
One additional idea: if waze feels that device is frequently accelerating and rotating, it could ask if device is mounted. Note that waze must take in account accelerations which are hard(but not impossible) to imitate by human - sharp, rapid, short, vibrant. And also, in account could be taken data recorded at certain minimum speed.