Which happened earlier: First traffic signal installed in London or Cat's Eyes invented?

Question 1

Which happened earlier?

A First traffic signal installed in London ✓ Earlier

B Cat's Eyes invented

First traffic signal installed in London (9 December 1868) came before Cat's Eyes invented (1 January 1933)

Question 2

Which happened earlier?

A Belisha beacons introduced

B First electric traffic signal installed ✓ Earlier

First electric traffic signal installed (5 August 1914) came before Belisha beacons introduced (1 January 1934)

Question 3

Which happened earlier?

A First UK motorway service station opens

B First three-colour traffic signal introduced ✓ Earlier

First three-colour traffic signal introduced (1 January 1919) came before First UK motorway service station opens (5 November 1959)

Earlier #151