The sign "Vehicles with water-hazardous cargo without an arrow symbol" indicates that vehicles transporting substances that are hazardous to water may be present in the area. This sign is used to alert other road users to the potential environmental risk in case of an accident or spill involving these types of vehicles.

Drivers are expected to exercise extra caution and be aware of the potential dangers associated with such vehicles. It is advisable to keep a safe distance and avoid any actions that may lead to accidents when these vehicles are nearby.