  Multicolour broadband photometry and flux calibrated low resolution
spectroscopy between 2014 and 2018 are used to investigate the behaviour of the
highly variable Herbig Ae star RR Tauri. As the star experienced a deep
Algol-like fade by a factor of over 10 in flux, we found the change in spectral
continuum to be grey while H{\alpha} emission flux halved. We also observed the
(V-Rc) colour index reddening as the star faded suggesting emission detectable
in the Rc-band but beyond our spectral response. We confirm that the
circumstellar reddening of RR Tau is consistent with an extinction ratio Rv = 5
and that its spectral type is close to A0. According to its luminosity and
temperature RR Tau is located in the H-R diagram among other HAEBE stars
contracting onto the Zero Age Main Sequence and has a mass between 4 and 5
MSun.
