Raleigh Public Record put together a great breakdown of the Food Truck regulations of each of the big cities in the Triangle. The chart states the obvious, that Raleigh lags behind with tolerance relative to food trucks. Chapel Hill and Carrboro are more liberal in letting food trucks roam the streets, while Durham outpaces everyone with the least restrictions.
I'd love to see this as compared to larger cities in America as well. I'm sure Raleigh is one of the more conservative overall.