I haven’t seen one specifically for parcel delivery vehicles yet. Users have shared package[1] and vehicle[2] projects on Universe.

You could likely use the car detection model as a base to collect photos and bootstrap a collection of delivery truck images. We’re working on enabling users to contribute additional images to these datasets as well.

Creating these custom detectors is what Roboflow is built for (and it’s free if you open source the dataset you create for others to build off of).

[1] https://universe.roboflow.com/joseph-nelson/packages-g0ton [2] https://universe.roboflow.com/roboflow-gw7yv/vehicles-openim...