## Section 4: Calculating Totals

This is the final step in completing your work
on Form 1617A, and it is a very important one. After you have finished
your shift of recording classified vehicles and transferring the
hourly data to the blocks for each direction of traffic flow, you
must now sum the counts within each block following these directions *in
the order as written*:

*First. *Add the counts from left to right
across each row and enter the sum of that row into the far-right
Total column of each block. You must do this for each row (each
counting hour) of your shift and for each block that you used for
the assigned count.

*Second. *Add the counts in each vehicle
classification column from top to bottom and enter the total on
the bottom Total row of each block under the appropriate classification
column. Do this for each block that you used for the assigned count.

*Third. *Add the totals across the bottom
row of each block from left to right, and enter the sum into the
bottom-right corner of each block. On a separate notepad or with
a calculator, add all the numbers in the far-right Total column
from top to bottom for each block. The Total column sum that you
just calculated must match the sum that you wrote in the bottom-right
corner — if it does not, a mistake has been made that requires action.
You must find all calculation errors within the block and make corrections
until the two sums match.