The Welsh Government has spent £336m to improve the Heads of the Valley road which was previously restricted to 50mph. If the new road is also restricted to 50mph the £336m will have been completely wasted.
The works on the road have over run in terms of time and costs with regular users subject to years of delays and 40mph. The promise of improving speed of transit will be destroyed with a 50mph speed limit. As a new road the project will have been designed with good vision and all current safety measures. There is no justification for a 50mph limit