NJ Department of Transportation has stated that the NABIs are overweight. NJDOT has certain axle weight requirements for buses that operate reguarly in the state, which tend to be lower than the average limits. Since NABIs are a T-drive bus (using transmissions like the B400) than a V-drive bus (using transmissions like the V731), the rear axle is moved forward to accomodate the engine set-up. Hopefully, NABI will be able to do something, such as move the a/c unit to the roof of the bus over the front axle, to fix this problem.