And while hundreds of thousands of people commute to jobs on either side of the frontier each day, the route is also widely used by tourists making their way between Singapore and Kuala Lumpur, a 350-kilometre road trip or short international flight.

Those travelling overland face an approximately five-hour drive but many opt for a stop-off at Malacca on the Malaysian coast on the eponymous strait, which ranks with that of Hormuz as one of the world's most important maritime trade avenues.

Malacca is popular with travellers for its mix of old colonial British buildings and Portuguese ruins which sit alongside a range of mosques and Chinese shophouses and temples - an architectural range that is reflected in the cultures observed and cuisines available in the city.

Singapore's Changi Airport and Kuala Lumpur International Airport are among the world's busiest aviation hubs, serving not only as entry points to their respective cities and countries, but also to the wider Southeast Asia region, where travellers often aim to visit several countries following arrival at one of the busier international airports.

The air route was deemed the world's busiest international connection in 2023 by aviation analytics company OAG and typically features in annual top ten rankings of cross-border flights measured by passenger numbers.