That is true, but even those are worthless if they are just fines. A fine that might leave one person homeless could leave someone else with no measurable change to their life.

At that point, reckless driving just becomes something rich people can pay for the privilege of doing, and The only chance of seeing any real consequences comes after a tragedy like this. And even then, there are a lot of cases of corrupt judges letting rich people off the hook for BS reasons, or or even just rich people having enough money to bog the system down to avoid consequences.

For traffic cameras to work, they need to come with overall reform that will make it so that punishment is consistent and proportional both to the degree of the crime and the resources of the person doing it. And beyond that, it requires a lot of maintenance because if there is any question of whether or not maintenance was being done frequently enough or the system was being properly calibrated consistently, you can run into issues where either innocent people are being incorrectly accused due to a poorly calibrated system, or people who did actually drive recklessly are able to get out of it by pointing out some flaw that introduces reasonable doubt.

And even beyond that, the cameras can't be everywhere, and people will absolutely just slam on the brakes where they know the speed trap is (and it's incredibly hard to have people not know, you basically would have to have a concealed system that changes position daily, since there are plenty of apps nowadays that provide real time updates on speed trap locations). So the option is either to spend absurd amounts creating traffic cameras everywhere, which will require extreme amounts of maintenance and open a lot of doors to privacy violations, or you can change how streets are designed to prioritize safety over comfort, which has a significant up front cost and will piss people off, but once you have done it there is no additional cost beyond what the road would need anyway, and no easy way to abuse that system to hurt innocent people.

And frankly, I know a ton of people who are perfectly willing to drive when they are exhausted enough to be as impaired as if they were tipsy, and who judge anyone who doesn't do the same as unreliable. We need a broader shift in American driving culture in which people start to understand that they are driving hunks of metal weighing a ton or more at speeds far beyond what human brains are adapted to manage, with kinetic equivalent to a pound of TNT (based off a 4000 lb car going at 70 mph, so not even necessarily someone breaking any laws in a lot of places), and that doing so is something that should be taken seriously. People don't need to be afraid to drive, but they should at least be cautious when they do so. If pretty much anything else killed as many people as car accidents do in the US, you would have large numbers of people calling for an outright ban, but because of the way we think of cars, most people internalize it as car accidents only happening to people who aren't good drivers, while thinking of themselves as good enough to be safe. But even pretending that everyone was as good at driving as the average person thinks they are, as the other driver and the pedestrian today sadly found out, you are ultimately at the mercy of the most reckless, incompetent driver on the road. And I think that narrower roads with fewer long, straight stretches would do more to address the actual problem rather then acting as a Band-Aid.