Besides the line indicating the location and alinement of the route, there are various route reconnaissance
symbols, shown along the route , which portray other data.
To show additional needed date, __________________ ___________________ ____________________
shown along the route.
(sharp curve; 24m; 2.0; 12; greater; 2.2; 8; width construction 6; 22) 3-46)
Another obstruction, which is usually indicated as part of the symbol for another feature, is an overhead
clearance of less than 4.3 meters. Tunnels, underpasses, overhead wires, and overhanging buildings whose overhead
clearance is less than ______________ are considered to be ______________________ .