I've tried a number of small radios. All worked when near the FM towers. None worked acceptably at much distance, say 30 miles. My Sony Walkman is the best. I rarely use a radio, preferring my mp3 player and buds. Yeah, there is definitely a safety issue.
I know there are small speakers that can be mounted but haven't gone that far yet.
I tour on a bent and live in a rural area, thus distance from towers.