Traffic on TV is a great idea. Let me explain:
Years ago I remember wondering why Channel 8 in Dallas ran traffic reports. They'd have a guy from metro voice over a map of traffic problems during the 5pm news. It didn't make much sense to me since most people didn't have TVs sitting in their office tuned to the news before they left work for the day.
Then I grew up a bit and started to see the genius behind it. First, there were (and are) plenty of people with TVs at work tuned to news. Stock brokers and such do that all the time. These are highly paid people that are quite attractive to advertisers.
Second, when the TV stations wised up and started to fly traffic helicopters, I realized that even though I had no need for this information, I would turn and watch to see what was going on. The addage that people always slow down to look at a wreck is true. Bringing it to TV is no different. We'll stop what we're doing and look at it.
Finally, when I started working a job where I was faced with driving through rush-hour traffic in the morning and afternoon, I tuned in. It was far better to see what the wreck was on TV than just briefly hear about it on the radio. At work, I had the added benefit of being able to see it before I left.
I think the changes in our world have mandated that TV start to cover traffic just like radio. It's obviously a draw now that it didn't used to be.
Interestingly enough, I think the best-known traffic people in the DFW area are now on TV, not radio. Susie Humphries, Dick Siegel and Laura Houston have been supplanted by Tammy Dombeck, Alexa Conomos, Chip Waggoner and Todd Carruth. Like their old radio counterparts, these TV personalities are far more than just the traffic reporters on their shows. In fact, Alexa anchors channel 8's noon show and fills in on anchoring Daybreak frequently. Alexa is also eye candy, even if Scott Sams never thought so. Tammy "boom boom" Dombeck is definitely eye candy on Channel 5, but I can't stand her. Chip Waggoner and Todd Carruth do a lot more banter with the anchors on Channel 4 and frequently seem to bring their own entertaining elements to the show. They are also very good and delivering a comprehensive traffic report that tells me everything I need to know before I walk out the door.