If you are worried about medical expenses or trip cancellation, then single trip travel insurance might be a good idea. Still, it is relatively rare to get this kind of insurance for intra-country travel.
There are a few advantages of single trip travel insurance. The main one being it costs less because it's only a fixed amount of time, and won't cover you afterwards.
You have multiple coverage of what needs to be protected since your items are always important in any type of travel. This helps give your most important possessions, business or leisure, a sense of...
That depends on the insurance company and the individual contract. As always, find out before you buy, or if you have already bought, read the small print.
Travel Insurance is highly recommended going anywhere. Who knows what could happen on a trip. It's better to be prepared, and it doesn't matter if you're traveling to Europe, Asia or Australia.