Ask the Editor: What’s that funny thing on the traffic signal?

Q: Take a look at the traffic signal at the northeast corner of La Jolla Boulevard and Nautilus. There is a usual white-colored object on top of the post. What is it?

A: It’s a DAS antenna — which means Distributed Antenna System. It’s an alternative to conventional wireless communication facility antennas that uses many smaller antennas, providing a smaller area of coverage, and which are usually typically unobtrusive.