Could it be owing to rounding? Or some (but not all) roadsigns being changed when measurement was more accurate? Or newer signs being calculated on the basis of the Northern Relief Road and older ones via Denbigh Road? Or a change over time as to what constitutes the mid-point of each town? More accurate computer compared to previously manual plotting?
Whatever the reason(s), measuring the mileage on a simple trip along the A525 between Rhuthun/Ruthin and Dinbych can cause confusion. This is what a motorist will see in terms of the distances as they travel between the two towns:
1. Rhuthun Cae Bricks
Upon leaving Rhuthun, the mileage to Dinbych is posted at 7. This is just over ¾ mile from Rhuthun town centre.
2. Rhewl
At the junction in Rhewl for Llandyrnog, the sum of the mileage between Rhuthun and Dinbych is posted as 7¾.
Whatever the reason(s), measuring the mileage on a simple trip along the A525 between Rhuthun/Ruthin and Dinbych can cause confusion. This is what a motorist will see in terms of the distances as they travel between the two towns:
1. Rhuthun Cae Bricks
Upon leaving Rhuthun, the mileage to Dinbych is posted at 7. This is just over ¾ mile from Rhuthun town centre.
At the junction in Rhewl for Llandyrnog, the sum of the mileage between Rhuthun and Dinbych is posted as 7¾.
3. Junction south of Pentre Llanrhaeadr
Total mileage between the two towns = 7.
4. Approaching Pentre Llanrhaeadr
The total changes to 8.
5. Staggered junction before Pentre Llanrhaeadr
That from Rhuthun to Dinbych now equates to 6.
6. Pentre Llanrhaeadr Crossroads (north)
The mileage here is 6¾. These are old signs because they show English first. Denbighhsire's policy is always Welsh first.
7. Llanrhaeadr By-pass south
The total mileage now reverts to 7.
8. Llanrhaeadr village
That in the village indicates the Rhuthun to Dinbych mileage at 8.
9. Llanrhaeadr by-pass north
At this point, the mileage becomes 7½.
10. Brookhouse
The mileage goes down to 6½.
11. Middleton Park roundabout
Signed off the roundabout and the distance to Rhuthun at this point is 7. That to Denbigh town centre is 1 mile.
12. Whitchurch Road
Finally, a finger post suggests the distance between Rhuthun and Dinbych is 7½.
So, what is the correct mileage? We have 8, 7¾, 7½, 6½, 6... Google, on the other hand, measuring from St Peter's Square to Hall Square Dinbych High Street is 7.7 miles. By contrast, the average of posted distances between the two towns plus the mode and median calculate at 7.
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