Could you tell me the difference between these 2 signs?

[tight fart]

To me, the first is hoping to raise some revenue.


And this is to stop vehicles.

[tight fart]

Lost ranger said:

One stops motor vehicles, one stops all vehicles.

What vehicles would be classed as not a motor vehicle, just a vehicle?

[tight fart]

Chatting to a guy yesterday who it turned out was a policeman involved with driving standards. I asked him and got this reply.
Emergency vehicles are aloud through whereas no entry they are not.