Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_29770377_1 (train_number VARCHAR, route_via VARCHAR)

### Question ###
How many trains are there for the route via trivandrum, ernakulam, newdelhi?

### Accurate SQL ###

SELECT COUNT(train_number) FROM table_29770377_1 WHERE route_via = "Trivandrum, Ernakulam, NewDelhi"