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Radar and lidar aren't foolproof. Radar's easy to jam and needs complicated processing to differentiate between clutter and things that might cause issues. Lida
by leoedin 13y ago
Radar and lidar aren't foolproof. Radar's easy to jam and needs complicated processing to differentiate between clutter and things that might cause issues. Lidar breaks down in fog and dust and has fairly limited range.
There's a reason air traffic control have moved to active ADS-B transmitters rather than simply using ground based radar to track aircraft - reliability. There is definitely safety issues from spoofing of data, but if those issues can be dealt with (perhaps using the certificate based system that's discussed in the article), reliability compared to car-mounted radar or lidar is significantly greater.
The lidar mounted on Google's autonomous cars is a long way from being integrated into production vehicles. The V2V proposal draws on existing car sensors - all that's needed is the addition of a small chip. V2V is a manufacturer proposal, and it's almost ready for production. It's a cheap and easy method of vastly increasing car safety. Road traffic accidents kill and injure a huge number of people. We should embrace anything that makes them significantly safer.
- blueblob 13y agoI agree, and would also like to point out that these are not mutually exclusive. Lasers can help detect pedestrians that run in front of cars, while intercar communication can send information about cars "intentions" and additionally could send warnings back to other cars about obstacles they may not be able to detect for a ways out.
- Shivetya 13y agoWhile I agree that they are not foolproof you do not use them separately. A combination of active and passive systems is used by the car to understand its surroundings. I would never compare the electronics used in aviation to anything employed in cars, the level of trust in aviation and the regulations behind it are legion. I seriously doubt that manufacturers would want to be under similarly complex and expensive regulation
- michaelt 13y agoThe V2V proposal draws on existing car sensors all that's needed is the addition of a small chip. A smart response to a vehicle ahead suddenly braking requires both vehicles to know what road they're on, how many lanes that road has, and which lane they're in. Maybe your car already has all that high-tech equipment, but my Honda CG125 sure doesn't!