Table 5.

Survey instrument for the pre-test

Frequency of ridesharing platforms use How often have you used ridesharing platforms in the past (e.g., Blablacar, Mitfahrgelegenheit, Poparide or Flinc)? (1 = Never and I cannot imagine to use them; 2 = Never but I can imagine to use them in the future; 3 = Rarely; 4 = Occasionally; 5 = Sometimes; 6 = Frequently; 7 = Usually; 8 = Every time)

Price assessment For the scenario mentioned on the previous page, i.e., a trip from London to Manchester, UK (200 miles, 4 h 40 min estimated travel time): What price would represent a good value (is appropriate) for you? The average price for a similar distance on this platform is 22 GBP. (open field)

What price would be expensive, yet still acceptable? (open field)

What price would be too cheap, thus raising doubts about quality? (open field)

What price would be too expensive, thus ruling out any consideration of booking? (open field)

Importance of information (attributes) How important is the following information to be available on the platform to you when selecting a ridesharing offer? (5-point Likert scale; 1 = not important at all; 2 = of little importance; 3 = of average importance; 4 = very important; 5 = absolutely essential) Driver’s name, Driver’s photo, Driver’s verification of email and phone number, Driver’s driving experience, Driver’s preferences (music, smoker/non-smoker, level of sociability), Car’s model and color, Car’s photo, Car’s year of production, Co-travellers’ name, Co-travellers’ photo, Co-travellers’ preferences (music, smoker/non-smoker, level of sociability), Other (please specify)

Name sorting What origin and gender does the owner of the name most probably belong to? (1 = European Male; 2 = European Female; 3 = European Gender-neutral; 4 = Muslim Male; 5 = Muslim Female; 6 = Muslim Gender-neutral; 7 = None of the offered groups) William, Narges, Noah, Tima, Hady, Oscar, Harry, Ben, Eylül, Samira, Sahar, Ranim, Louis, Hayyan, Raphaël, Maya, Nathan, Gabriel, Isabella, Hala, Eymen, Mila, Elif, Ella, Soraya, Joram, Miray, Shayan, Yusuf, Najib, Poone, Shahram, Alice, Rifat, Hugo, Suske, Oliver, Miraç, Meryem, Ava, Nizar, Paul, Alan Poppy, Aditya, Elias, Lily, Defne, Rose, Nima, Charlie, Ali, Jade, Ahmet, Mohammad, Sydu, Rashid, Manon, Layla, Jules, Sofia, Lea, Olivia, Isla, Mehdi, Manal, Ömer, Mustafa, Mila, Lina, Maen, Reza, Cesar, Samir, Aya, Ewa, Arthur, Yaser, Emma, Jack, Aischa, Uri, Ebrar, Asel, Marie, Anna, Hila, Zahra, Amelia, Hanna, Louise, Henry, Aseel, Amena, Jonas, Faezeh, Fawad, Qazal, Quynh, Emilia, Felix, Finn, Najme, George, Adam, Jacob, Lucas, Mia, Hiranur, Emir, Zeynep, Chloé, Leo, Fazal, Raheleh, Usama, Yiğit