Coming Thursday on the 19th of September between 08:00 and 19:00 o' clock , five field workers from Ecorys will be counting the number and types of bicycles at the various bicycle parking facilities around the Amsterdam Science Park. In addition, the field workers will carry out a short written survey asking visitors about the purpose of their visit and the direction from which they came (using the 4-digit postal code). Your cooperation in this matter would be greatly appreciated.