M4 Westbound traffic joining at Junction 25 is diverted via Junction 25A/A4042 (Heidenheim Drive)/A4051 (Malpas Road) to Junction 26.
This passage describes the detour of M4 westbound traffic from its usual path to a designated route via Junction 25A/A4042 (Heidenheim Drive)/A4051 (Malpas Road) to reach Junction 26.