Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### 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