can someone tell if this is the tow weight to a van axle/axle group load capacity 2900

Gday...

There are three weights pertinent to the van weight -

TARE - the base weight of the van, with nothing in it  - no water, gas bottles, awning, your clothing etc

ATM - (Agregate Trailer Mass) the total weight allowed with all your 'stuff' included - water, gas, clothes, food, bedding etc etc

and - GVM (Gross Vehicle Mass)

Scroll through this site which should provide some information for you -

http://www.lets-getaway.com/caravan-complianceplates.htm

Cheers

John 

The maximum legal loaded weight is the ATM (Pre 1989 it was GVM).

Note: Some of the weight definitions/calculation methods on the 'Lets Getaway' website are incorrect.

Cheers, Ozjohn.