Complex sentence: In the United Kingdom the crossing is marked with Belisha beacons, flashing amber globes on black and white poles on each side of the road, named after Leslie Hore-Belisha, the Minister of Transport, who introduced them in 1934.
Split into simpler sentences: In the United Kingdom the crossing is marked with Belisha beacons on each side of the road. They are named after Leslie Hore-Belisha, the Minister of Transport who introduced them in 1934.