![Searchlights at Ayer.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Searchlight-Signals_at_Ayer_P1340920.jpg?resize=474%2C711)
At one time the Boston & Maine was a poster child for the General Railway Signal Company.
These days some of the old GRS searchlight signals remain but they are rapidly disappearing.
Here’s a railroad photography tip: catch the old signals while you can, they are fading fast, and soon they will be gone.
I’ve issued this signal warning before, and I’ll do it again.
Over the last month, I exposed these photos along the old B&M in the vicinity of Ayer, Massachusetts. These railroad photos are intended as more of a record, than as active illustrations of the old signals.
![Looking east at Ayer, Massachusetts.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Ayer_interlocking_w_searchlights_DSCF7469.jpg?resize=474%2C316)
![In many places B&M searchlights are approach lit, in others they are continuously lit, such as here in Ayer.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Ayer_interlocking_w_searchlights_DSCF7472.jpg?resize=474%2C711)
![B&M was among railroads that used staggered heads for intermediate signals. Notice the use of both the traditional 'G' plate and the more recent 'D' plate.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Searchlights_near_Shirley_Mass_DSCF7595.jpg?resize=474%2C711)
Check out my book; Classic Railroad Signals published this year by Voyageur Press. Also available through Amazon, Barnes & Noble and other outlets.
![The searchlight style of signal was developed more than 90 years ago. It has been out of favor for new installations for more than two decades.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Searchlight_signal_Ayer_DSCF7492.jpg?resize=474%2C711)
![High green! (There's a train coming).](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Searchlight_high_green_Ayer_DSCF7651.jpg?resize=474%2C711)
![Fallen soldiers.](https://i0.wp.com/briansolomon.com/trackingthelight/wp-content/uploads/2015/12/Old_searchlight_heads_P1340922.jpg?resize=474%2C316)
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Check out my book; Classic Railroad Signals published this year by Voyageur Press. Also available through Amazon, Barnes & Noble and other outlets.