Hi All,

Just wondering if anyone knew what the sets of small orange and blue lights
are, on the M4 section approx J1-J3. They are mounted on the central
lamp-posts, and are quite small. Never seen them working.

Also, on the eastbound (Londonbound) side, one of the gantries at about J3
had what looked like a very small set of traffic lights (only two lights
though) mounted on the right hand side upright, approximately 6' off the
ground. I dont' suppose anyone knows what these might be?

Cheers

JP