COLOMBO, March 18 -- Sri Lanka has introduced sweeping fuel conservation measures, including an odd-even day vehicle fuel system and a four-day work week, as supply disruptions linked to tensions in the Middle East raise concerns over prolonged shortages.

The Ceylon Petroleum Corporation (CPC) said vehicle owners will be allowed to purchase fuel based on the last digit of their number plates, with the system coming into effect from Thursday (19).

Under the scheme, vehicles with number plates ending in 0, 2, 4, 6, and 8 can obtain fuel on even-numbered dates, while those ending in 1, 3, 5, 7, and 9 are permitted to refuel on odd-numbered dates, CPC Managing Director Mayura Neththikumarage said.

The measure complements the reintroduction...