Relating to the operation of certain vehicles preceding, during, and following disasters.

SB 497 allows vehicles to use normally restricted dyed motor fuel on public highways during declared disasters (such as floods or hurricanes) for 30 days after the declaration ends, provided the fuel was purchased with proper documentation. It creates a new permit system for oversized or overweight vehicles transporting agricultural commodities (including crops, livestock, woodchips, and processed farm products) during disasters. The bill modifies transportation codes to permit these vehicles to operate under special conditions on roads with weight restrictions, specifically for delivering agricultural goods to disaster-affected areas. This directly affects farmers, agricultural transporters, and emergency response operations during declared state disasters.