Tube drivers in London, represented by the Rail, Maritime and Transport union (RMT), are scheduled to strike for 24 hours on Tuesday and Thursday, causing major disruptions to the capital's transport system. The strikes are projected to inflict a £250 million hit to the economy as services on the Piccadilly and Circle lines will be halted, and most other lines will operate at reduced capacity for several days. The RMT is resisting a proposed four-day working week, which they argue could lead to increased fatigue and safety concerns. However, Transport for London (TfL) insists that the changes are voluntary and aimed at improving reliability without additional costs. Critics, including Susan Hall, head of the Conservative group at the London Assembly, have called on Mayor Sadiq Khan to take action against the strikes, accusing him of failing to uphold his promise of zero strikes. The average salary for a Tube driver is around £72,000, with total earnings often reaching £80,000 when factoring in overtime. The strikes highlight ongoing tensions between the union and TfL, with RMT general secretary Eddie Dempsey expressing frustration over the lack of concessions from TfL during negotiations.