Aviemore Speyside signal box is located approximately 500 yards North of Aviemore mainline station (about 150 yards North of Aviemore Speyside station), and is located on the West side of the line.  This signal box is a traditional wooden construction, and is mounted atop a brick base.

The Aviemore Speyside signal box currently controls access to and from the engine shed and carriage shed facilities at Aviemore via a single crossover and headshunt arrangement.  This signal box is rarely manned, as it is only required for access to these facilities.

Unlike the 'boxes at Boat of Garten, this 'box has the access to its locking room via a hatch in the operating room floor.  This can make working in the locking room a little challenging - especially when getting tools and equipment in and out.

The 'box is fitted with a 20 lever McKenzie & Holland frame, and features Cam and Tappet locking.  Currently, only three levers are operational, and these work the crossover, its facing point lock, with the third lever acting as a King Lever to switch the 'box out.

This 'box was originally located at Garve, and was moved to the Strathspey in the early 1980's.  While the railway was still operating from Aviemore Speyside station, there were extensive plans for this 'box to control access into, and out of the station, with a full signalling scheme.  When the railway gained access to Aviemore Mainline station, and began running from platform 3, these plans became largely redundant.

There is currently a work in progress installation to provide a double-headed ground position light shunt signal at the headshunt side of the crossover.  As this end of the crossover does not see passenger working, and therefore does not have a facing point lock, there is effectively no detection and proving at this end of the crossover.  The intention is to fit an electric point detector to this end of the crossing, which will then be interlocked with the shunt signal, preventing the signal from clearing to a proceed aspect in the event of the point blades not closing correctly.