How many road numbers are before 1922?
CREATE TABLE table_name_18 (road_number VARCHAR, year INTEGER)
SELECT COUNT(road_number) FROM table_name_18 WHERE year < 1922
### Context: CREATE TABLE table_name_18 (road_number VARCHAR, year INTEGER) ### Question: How many road numbers are before 1922? ### Answer: SELECT COUNT(road_number) FROM table_name_18 WHERE year < 1922