Philippine transport groups have launched a nationwide strike to protest against a government programme drivers fear would phase out traditional jeepneys, which have become a cultural icon.

Officials have deployed government vehicles to take stranded passengers in some areas.

Other groups refused to join the week-long strike that could keep more than 40,000 passenger jeepneys, vans and other ageing vehicles off the streets in the Manila metropolis alone.

Protesting drivers and supporters held a noisy rally in suburban Quezon city in the capital region, then proceeded in a convoy to a government transport regulatory office to press their protest.

Renato Reyes of the left-wing political alliance Bayan, which was backing the strike, said: “We’re calling on the public to support the transport strike in any way possible.

“The inconvenience of the transport stoppage is temporary, but the loss of livelihood of drivers and operators would be long-term.”

Transport secretary Jaime Bautista said no major transport disruption had been monitored. Other officials said government vehicles were deployed to carry commuters in some areas.

Morning rush-hour traffic was heavy as usual in major roads in Manila and nearby cities.

President Ferdinand Marcos Jr.’s office said by noon, “there is no disruption except in a handful of routes in the national capital region”.

Mr Bautista warned that protesting drivers who would resort to violence and coercion to stop passenger vehicles not joining the strike would face criminal charges.

Vice President Sara Duterte, who also serves as education secretary, drew criticisms after saying the strike is a communist rebel-inspired action that may inconvenience students.

The government transport modernisation programme, first launched in 2017, aims to replace dangerously dilapidated and old passenger jeepneys and vans with modern vehicles, which have safety features and conform with carbon emissions standards.

Vehicle owners have to join transport cooperatives and corporations by year’s end for better transport management.

Opponents say most poor drivers could not afford to purchase new passenger jeepneys even with promised government financial aid.

“It’s OK to have modernization for those who have money,” jeepney driver Benito Garcia told The Associated Press. “But for us jeepney drivers and operators, we cannot afford.”

Others said the program would mean the demise of the gaudily decorated and brightly coloured jeepneys, which have been regarded as Manila’s “King of the Road” and a showcase of Philippine culture on wheels.

The diesel-powered jeepneys evolved from US military jeeps that American forces left behind after the Second World War.

The vehicles were modified and then reproduced, many with second-hand truck chassis, and for decades were the most popular form of land transport among the working class, even though they cough out dark fumes that have been blamed for Manila’s notoriously polluted air.