C248 Hump Bridge
The Scalextric catalogue no. 21 of 1980 has the following description "C.248 Hump Bridge. Rally car drivers everywhere can tell you of the dangers of driving too fast over a hump bridge. These bridges appear just where you don't expect them testing the drivers skills to the limit. When positioned on long straights track sections the hump bridge can be taken fairly fast but only the best drivers can negotiate these bridges without losing momentum. Three in a row will create a real bumpy ride. 35 cm (13 3/4") long."