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A1 between J4 and J5, Hertfordshire (Grid ref TL224120) B197, Great North Road, Hertfordshire (Grid ref TL223116) U, Applecroft Road, Hertfordshire (Grid ref TL229125) A6129 between A1M / A1001 / A414 and B197, Hertfordshire (Grid ref TL227110) A6129 between B197 and A1000, Hertfordshire (Grid ref TL235120) A1000 between A6129 and B195 W, Hertfordshire (Grid ref TL240121) U, Howardsgate, Hertfordshire (Grid ref TL236130) A414 between A1M / A1001 / A6129 and A1000 (midpoint), Hertfordshire (Grid ref TL229102) B195, Bridge Road, Hertfordshire (Grid ref TL239131) A1 between J5 and J6, Hertfordshire (Grid ref TL223140) A1001 between A1057 and A1M / A414 / A6129, Hertfordshire (Grid ref TL225100) A1 between J3 and J4, Hertfordshire (Grid ref TL224099) B653, Hertfordshire (Grid ref TL203132) A1000 between B195W and Ring Rd Jct S, Hertfordshire (Grid ref TL244133) A1000 between A1000 Mill Green Lane and A6129, Hertfordshire (Grid ref TL240101) A1000 between A414 (midpoint) and A1000 Mill Green Lane, Hertfordshire (Grid ref TL239099) A414 between A1000 (midpoint) and A1000 Mill Green Lane, Hertfordshire (Grid ref TL240097) A1000 between inner ring road and inner ring road, Hertfordshire (Grid ref TL248135) U, Moorlands, Hertfordshire (Grid ref TL252112) A1000 between Ring Rd Jct S and Ring Rd Jct N, Hertfordshire (Grid ref TL248136)