Check out this image: http://bc02.rp-online.de/polopoly_fs/autobahn-kaarst-umbau-sperrung-autobahn-linda-1.3931552.1389198059!httpImage/1370760101.jpg_gen/derivatives/d540x303/1370760101.jpg
The reflectors are the tiny orange dots on the small wall between the lanes (to oncoming traffic). The...