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Mounting concern about carbon emissions may be altering travel habits in Europe’s largest economy as figures from German airports show a steady decline in passengers taking domestic flights.

The number of people flying between German cities fell 12% in November from a year earlier, according to the ADV industry group, marking a fourth straight monthly drop and mirroring a pattern emerging in Sweden, where teenage activist Greta Thunberg has spearheaded a campaign against air transport. Rail firm Deutsche Bahn AG has meanwhile reported record passenger numbers.

The data adds to signs that climate change is fostering a sense of so-called flying shame — flygskam in Swedish — that’s causing some people to avoid one of the most polluting forms of travel. The phenomenon may be more advanced in Germany after the country suffered a series of extreme weather events that saw it buffeted by thunderstorms and the River Rhine running dry.

“To me, this is evidence of heightened awareness of climate change turning to consumer action,” said Stefan Goessling, professor of transport economics at Linnaeus University business school, Sweden, who analyzed the data and found a slowing economy, strikes and airline failures didn’t fully explain the slump.

The figures come as Germany’s parliament votes on a climate package including a tax cut aimed at reducing train ticket prices by around 10%, while Deutsche Bahn is targeting 100% renewable electricity to power trains on inter-city routes. UBS last month said Europe may be set for a “high-speed rail renaissance” as deregulation aids better services and cheaper fares.

The ADV numbers show that flights from Germany to other European countries have also declined to a lesser degree, something that might be accounted for by the relative uncompetitiveness of rail on trips much beyond four hours.

The tally for inter-continental journeys, where surface transport isn’t practical and which are often less discretionary than shorter ones, involving family visits and key business events, is still increasing.

The German trends replicate those seen in Sweden, where airport operator Swedavia AB reported in April that passenger numbers had dropped for seven consecutive months, just as state rail operator SJ posted record figures.

In Germany, which has suffered record-breaking heatwaves and a drop in Rhine water levels that halted barge shipments, caused fuel shortages and disrupted power production, the environment has become the most pressing issue among voters, according to pollster Matthias Jung. Support for the country’s Greens is above 20%, trailing only Chancellor Angela Merkel’s Christian Democrats.

William Wilkes and Richard Weiss, ©2019 Bloomberg L.P.

ADV has suggested other issues may be at play in the slump, including strikes at Deutsche Lufthansa AG and the cancellation of routes between Berlin and three other cities. Goessling said that explanation doesn’t stack up given that air-passenger numbers have declined across the country. Neither is the economy likely to have been a major factor, with household spending up 1.8% in the third quarter and consumer confidence rated “exceptionally high.”

Kepler Cheuvreux analyst Ruxandra Haradau-Doeser said it’s too early to be sure what’s prompting the slide in domestic flying, though tax regimes aimed at cutting train fares will inevitably weigh on airline volumes and put carriers spanning Lufthansa to discount specialist EasyJet Plc under extra pressure.

Deutsche Bahn reckons annual passenger numbers on long-distance trains will reach 260 million by 2040, almost double the 2015 total, while Austrian’s state railway operator is adding night-train capacity in expectation of rising demand.

The European Union plans to impose a jet-fuel levy as part of its new Green Deal. Carriers including Ryanair Holdings Plc oppose the move and say nations could more effectively lower carbon emissions by investing in sustainable fuels and electric planes and simplifying air traffic control networks.

Alexandre de Juniac, head of the International Air Transport Association, last month urged carriers to better communicate what they’re doing to reduce emissions, warning: “We expect anti-flying sentiment to grow and spread.”

©2019 Bloomberg L.P.

This article was written by William Wilkes and Richard Weiss from Bloomberg and was legally licensed through the NewsCred publisher network. Please direct all licensing questions to legal@newscred.com.

Photo Credit: An aerial view of Munich airport. Is flight shaming to blame for a fall in German domestic air travel? Flughafen München GmbH