The sign you referred to, "Vehicles (verbal statement) 1050-33," generally indicates that other road users need to be aware of vehicles (like cars, trucks, buses, or motorcycles) that may be present on the road. This sign may be used to alert drivers to the possible presence of slower-moving vehicles, or in areas where vehicles might enter the roadway unexpectedly.

In practice, following this sign means that drivers should remain vigilant and prepared to react to vehicles that might not be visible at first glance, such as those coming from side roads or driveways.

If you have any specific questions about this sign or related traffic rules, feel free to ask!