Radios for funeral home, parking lot and procession

Can someone offer me some suggestions for this type of application

If you have (or get) a license then I would look at something like these:

They are small, UHF (work indoors and outdoors), and they have Li-ion batteries so they will last quite a while between charges.

They will only have about one mile range though. If you need something with a bit more reach, I would upgrade to these: