@Rusty it does have a mirror, it's just to the left of the n/s upper marker lamp. I drive the same DAF, the class V1 mirror that covers the front blind spot is useless other than for "shunting". It is obscured by the near-side sun visor, the wiper sweep doesn't touch that part of the screen and it gets covered in road grime within minutes.
Some bloke ran into the back of me in a Megane in traffic, the 1st I knew about it was when I pulled away, I did my usual mirror check and saw a cloud of steam. I initially assumed it was from the rear brakes but then I saw the remains of the Renault.
He'd hit me so hard both front wings were touchings the front wheels, the radiator was on top of the engine and the bonnet was over the screen. He was fine other than a little shook up.
His car did scratch my rear reflective tape though...