APPENDIX C

Volume Groups and Precision Levels

Table C-1. Standard Sample Volume Groups and Precision Levels

+-------+--------------+---------------+--------------+---------------+
| **    |              |               |              |               |
| RURAL |              |               |              |               |
| AR    |              |               |              |               |
| EAS** |              |               |              |               |
+-------+--------------+---------------+--------------+---------------+
| AADT  | Interstate   | Other         | Minor        | Major         |
|       |              | Principal     |              |               |
| V     |              |               | Arterial     | Collector     |
| olume |              | Arterial      |              |               |
|       |              |               |              |               |
| Group |              |               |              |               |
+-------+--------------+---------------+--------------+---------------+
|       | (90-5)       | (90-5)        | (90-10)      | (80-10)       |
+-------+--------------+---------------+--------------+---------------+
| 01    | 0- 9,999     | 0- 4,999      | 0- 2,499     | 0- 2,499      |
|       |              |               |              |               |
| 02    | 10,000-      | 5,000- 9,999  | 2,500- 4,999 | 2,500- 4,999  |
|       | 19,999       |               |              |               |
| 03    |              | 10,000-       | 5,000- 9,999 | 5,000- 9,999  |
|       | 20,000-      | 14,999        |              |               |
| 04    | 29,999       |               | 1            | 10,000-19,999 |
|       |              | 15,000-       | 0,000-19,999 |               |
| 05    | 30,000-      | 19,999        |              | 20,000-29,999 |
|       | 39,999       |               | 2            |               |
| 06    |              | 20,000-       | 0,000-29,999 | 30,000-39,999 |
|       | 40,000-      | 29,999        |              |               |
| 07    | 49,999       |               | 3            | 40,000-49,999 |
|       |              | 30,000-       | 0,000-39,999 |               |
| 08    | 50,000-      | 39,999        |              | 50,000-59,999 |
|       | 59,999       |               | 4            |               |
| 09    |              | 40,000-       | 0,000-49,999 | 60,000-69,999 |
|       | 60,000-      | 49,999        |              |               |
| 10    | 69,999       |               | 5            | 70,000-79,999 |
|       |              | 50,000-       | 0,000-59,999 |               |
| 11    | 70,000-      | 59,999        |              | 80,000-89,999 |
|       | 79,999       |               | 6            |               |
| 12    |              | 60,000-       | 0,000-69,999 | 90,000-99,999 |
|       | 80,000-      | 69,999        |              |               |
| 13    | 89,999       |               | 7            | \> or =       |
|       |              | 70,000-       | 0,000-79,999 | 100,000       |
|       | 90           | 84,999        |              |               |
|       | ,000-104,999 |               | 8            |               |
|       |              | 85,000-       | 0,000-89,999 |               |
|       | 105          | 99,999        |              |               |
|       | ,000-119,999 |               | 9            |               |
|       |              | 10            | 0,000-99,999 |               |
|       | 120          | 0,000-114,999 |              |               |
|       | ,000-134,999 |               | \> or =      |               |
|       |              | \> or =       | 100,000      |               |
|       | \> or =      | 115,000       |              |               |
|       | 135,000      |               |              |               |
+-------+--------------+---------------+--------------+---------------+

Table C-2. Standard Sample Volume Groups and Precision Levels

+-----+------------+------------+------------+-----------+------------+
| *   |            |            |            |           |            |
| *SM |            |            |            |           |            |
| ALL |            |            |            |           |            |
| UR  |            |            |            |           |            |
| BAN |            |            |            |           |            |
| A   |            |            |            |           |            |
| REA |            |            |            |           |            |
| S** |            |            |            |           |            |
+=====+============+============+============+===========+============+
| A   | Interstate | Other      | Other      | Minor     | Collector  |
| ADT |            | Freeways   | Principal  |           |            |
|     |            |            |            | Arterial  |            |
| Vol |            | and        | Arterial   |           |            |
| ume |            | E          |            |           |            |
|     |            | xpressways |            |           |            |
| Gr  |            |            |            |           |            |
| oup |            |            |            |           |            |
+-----+------------+------------+------------+-----------+------------+
|     | (90-5)     | (90-5)     | (90-5)     | (90-10)   | (80-10)    |
+-----+------------+------------+------------+-----------+------------+
| 01  | 0- 9,999   | 0- 9,999   | 0- 4,999   | 0- 2,499  | 0- 999     |
|     |            |            |            |           |            |
| 02  | 10,000-    | 10,000-    | 5,000-     | 2,500-    | 1,000-     |
|     | 19,999     | 19,999     | 9,999      | 4,999     | 1,999      |
| 03  |            |            |            |           |            |
|     | 20,000-    | 20,000-    | 10,        | 5,000-    | 2,000-     |
| 04  | 29,999     | 29,999     | 000-14,999 | 9,999     | 4,999      |
|     |            |            |            |           |            |
| 05  | 30,000-    | 30,000-    | 15,        | 10,0      | 5,000-     |
|     | 39,999     | 39,999     | 000-19,999 | 00-14,999 | 9,999      |
| 06  |            |            |            |           |            |
|     | 40,000-    | 40,000-    | 20,        | 15,0      | 10,        |
| 07  | 49,999     | 49,999     | 000-24,999 | 00-19,999 | 000-14,999 |
|     |            |            |            |           |            |
| 08  | 50,000-    | 50,000-    | 25,        | 20,0      | 15,        |
|     | 59,999     | 59,999     | 000-29,999 | 00-24,999 | 000-19,999 |
| 09  |            |            |            |           |            |
|     | 60,000-    | 60,000-    | 30,        | 25,0      | 20,        |
| 10  | 69,999     | 69,999     | 000-34,999 | 00-29,999 | 000-24,999 |
|     |            |            |            |           |            |
| 11  | 70,000-    | 70,000-    | 35,        | 30,0      | 25,        |
|     | 79,999     | 79,999     | 000-39,999 | 00-34,999 | 000-29,999 |
| 12  |            |            |            |           |            |
|     | 80,000-    | 80,000-    | 40,        | 35,0      | 30,        |
| 13  | 89,999     | 89,999     | 000-44,999 | 00-39,999 | 000-34,999 |
|     |            |            |            |           |            |
|     | 90,0       | 90,0       | 45,        | 40,0      | 35,        |
|     | 00-104,999 | 00-104,999 | 000-54,999 | 00-49,999 | 000-44,999 |
|     |            |            |            |           |            |
|     | 105,0      | 105,0      | 55,        | 50,0      | 45,        |
|     | 00-119,999 | 00-119,999 | 000-64,999 | 00-59,999 | 000-54,999 |
|     |            |            |            |           |            |
|     | 120,0      | 120,0      | 65,        | 60,0      | 55,        |
|     | 00-134,999 | 00-134,999 | 000-74,999 | 00-69,999 | 000-64,999 |
|     |            |            |            |           |            |
|     | \> or =    | \> or =    | \> or =    | \> or =   | \> or =    |
|     | 135,000    | 135,000    | 75,000     | 70,000    | 65,000     |
+-----+------------+------------+------------+-----------+------------+

Table C-3. Standard Sample Volume Groups and Precision Levels

+-------+-----------+-----------+-----------+-----------+-----------+
| **For |           |           |           |           |           |
| URBA  |           |           |           |           |           |
| NIZED |           |           |           |           |           |
| AREAS |           |           |           |           |           |
| \<20  |           |           |           |           |           |
| 0,000 |           |           |           |           |           |
| Popul |           |           |           |           |           |
| ation |           |           |           |           |           |
| that  |           |           |           |           |           |
| are   |           |           |           |           |           |
| NOT   |           |           |           |           |           |
| in    |           |           |           |           |           |
| NAAQS |           |           |           |           |           |
| Non   |           |           |           |           |           |
| attai |           |           |           |           |           |
| nment |           |           |           |           |           |
| or    |           |           |           |           |           |
| M     |           |           |           |           |           |
| ainte |           |           |           |           |           |
| nance |           |           |           |           |           |
| Ar    |           |           |           |           |           |
| eas** |           |           |           |           |           |
+=======+===========+===========+===========+===========+===========+
| AADT  | I         | Other     | Other     | Minor     | Collector |
|       | nterstate | Freeways  | Principal |           |           |
| V     |           |           |           | Arterial  |           |
| olume |           | and       | Arterial  |           |           |
|       |           | Ex        |           |           |           |
| Group |           | pressways |           |           |           |
+-------+-----------+-----------+-----------+-----------+-----------+
|       | (80-10)   | (80-10)   | (80-10)   | (90-10)   | (80-10)   |
+-------+-----------+-----------+-----------+-----------+-----------+
| 01    | 0- 24,999 | 0- 24,999 | 0- 2,499  | 0- 2,499  | 0- 999    |
|       |           |           |           |           |           |
| 02    | 25,000-   | 25,000-   | 2,500-    | 2,500-    | 1,000-    |
|       | 49,999    | 49,999    | 4,999     | 4,999     | 1,999     |
| 03    |           |           |           |           |           |
|       | 50,000-   | 50,000-   | 5,000-    | 5,000-    | 2,000-    |
| 04    | 74,999    | 74,999    | 9,999     | 9,999     | 4,999     |
|       |           |           |           |           |           |
| 05    | 75,000-   | 75,000-   | 10,0      | 10,0      | 5,000-    |
|       | 99,999    | 99,999    | 00-14,999 | 00-14,999 | 9,999     |
| 06    |           |           |           |           |           |
|       | 100,00    | 100,00    | 15,0      | 15,0      | 10,0      |
| 07    | 0-124,999 | 0-124,999 | 00-19,999 | 00-19,999 | 00-14,999 |
|       |           |           |           |           |           |
| 08    | 125,00    | 125,00    | 20,0      | 20,0      | 15,0      |
|       | 0-149,999 | 0-149,999 | 00-24,999 | 00-24,999 | 00-24,999 |
| 09    |           |           |           |           |           |
|       | 150,00    | 150,00    | 25,0      | 25,0      | 25,0      |
| 10    | 0-174,999 | 0-174,999 | 00-34,999 | 00-34,999 | 00-34,999 |
|       |           |           |           |           |           |
| 11    | 175,00    | 175,00    | 35,0      | 35,0      | 35,0      |
|       | 0-199,999 | 0-199,999 | 00-44,999 | 00-44,999 | 00-44,999 |
| 12    |           |           |           |           |           |
|       | 200,00    | 200,00    | 45,0      | 45,0      | 45,0      |
| 13    | 0-224,999 | 0-224,999 | 00-54,999 | 00-54,999 | 00-54,999 |
|       |           |           |           |           |           |
|       | 225,00    | 225,00    | 55,0      | 55,0      | 55,0      |
|       | 0-249,999 | 0-249,999 | 00-69,999 | 00-69,999 | 00-69,999 |
|       |           |           |           |           |           |
|       | 250,00    | 250,00    | 70,0      | 70,0      | 70,0      |
|       | 0-274,999 | 0-274,999 | 00-84,999 | 00-84,999 | 00-84,999 |
|       |           |           |           |           |           |
|       | 275,00    | 275,00    | 85,0      | 85,0      | 85,0      |
|       | 0-299,999 | 0-299,999 | 00-99,999 | 00-99,999 | 00-99,999 |
|       |           |           |           |           |           |
|       | \> or =   | \> or =   | \> or =   | \> or =   | \> or =   |
|       | 300,000   | 300,000   | 100,000   | 100,000   | 100,000   |
+-------+-----------+-----------+-----------+-----------+-----------+

Table C-4. Standard Sample Volume Groups and Precision Levels

+------+------------+------------+-----------+-----------+-----------+
| *    |            |            |           |           |           |
| *For |            |            |           |           |           |
| U    |            |            |           |           |           |
| RBAN |            |            |           |           |           |
| IZED |            |            |           |           |           |
| A    |            |            |           |           |           |
| REAS |            |            |           |           |           |
| [\>  |            |            |           |           |           |
| ]{.u |            |            |           |           |           |
| nder |            |            |           |           |           |
| line |            |            |           |           |           |
| }200 |            |            |           |           |           |
| ,000 |            |            |           |           |           |
| Po   |            |            |           |           |           |
| pula |            |            |           |           |           |
| tion |            |            |           |           |           |
| and  |            |            |           |           |           |
| Sma  |            |            |           |           |           |
| ller |            |            |           |           |           |
| U    |            |            |           |           |           |
| rban |            |            |           |           |           |
| ized |            |            |           |           |           |
| A    |            |            |           |           |           |
| reas |            |            |           |           |           |
| that |            |            |           |           |           |
| ARE  |            |            |           |           |           |
| in   |            |            |           |           |           |
| N    |            |            |           |           |           |
| AAQS |            |            |           |           |           |
| N    |            |            |           |           |           |
| onat |            |            |           |           |           |
| tain |            |            |           |           |           |
| ment |            |            |           |           |           |
| or   |            |            |           |           |           |
| Ma   |            |            |           |           |           |
| intn |            |            |           |           |           |
| ance |            |            |           |           |           |
| Are  |            |            |           |           |           |
| as** |            |            |           |           |           |
+======+============+============+===========+===========+===========+
| AADT | Interstate | Other      | Other     | Minor     | Collector |
|      |            | Freeways   | Principal |           |           |
| Vo   |            |            |           | Arterial  |           |
| lume |            | and        | Arterial  |           |           |
|      |            | E          |           |           |           |
| G    |            | xpressways |           |           |           |
| roup |            |            |           |           |           |
+------+------------+------------+-----------+-----------+-----------+
|      | (90-10)    | (90-10)    | (90-10)   | (90-10)   | (80-10)   |
+------+------------+------------+-----------+-----------+-----------+
| 01   | 0- 24,999  | 0- 24,999  | 0- 2,499  | 0- 2,499  | 0- 999    |
|      |            |            |           |           |           |
| 02   | 25,000-    | 25,000-    | 2,500-    | 2,500-    | 1,000-    |
|      | 49,999     | 49,999     | 4,999     | 4,999     | 1,999     |
| 03   |            |            |           |           |           |
|      | 50,000-    | 50,000-    | 5,000-    | 5,000-    | 2,000-    |
| 04   | 74,999     | 74,999     | 9,999     | 9,999     | 4,999     |
|      |            |            |           |           |           |
| 05   | 75,000-    | 75,000-    | 10,0      | 10,0      | 5,000-    |
|      | 99,999     | 99,999     | 00-14,999 | 00-14,999 | 9,999     |
| 06   |            |            |           |           |           |
|      | 100,0      | 100,0      | 15,0      | 15,0      | 10,0      |
| 07   | 00-124,999 | 00-124,999 | 00-19,999 | 00-19,999 | 00-14,999 |
|      |            |            |           |           |           |
| 08   | 125,0      | 125,0      | 20,0      | 20,0      | 15,0      |
|      | 00-149,999 | 00-149,999 | 00-24,999 | 00-24,999 | 00-24,999 |
| 09   |            |            |           |           |           |
|      | 150,0      | 150,0      | 25,0      | 25,0      | 25,0      |
| 10   | 00-174,999 | 00-174,999 | 00-34,999 | 00-34,999 | 00-34,999 |
|      |            |            |           |           |           |
| 11   | 175,0      | 175,0      | 35,0      | 35,0      | 35,0      |
|      | 00-199,999 | 00-199,999 | 00-44,999 | 00-44,999 | 00-44,999 |
| 12   |            |            |           |           |           |
|      | 200,0      | 200,0      | 45,0      | 45,0      | 45,0      |
| 13   | 00-224,999 | 00-224,999 | 00-54,999 | 00-54,999 | 00-54,999 |
|      |            |            |           |           |           |
|      | 225,0      | 225,0      | 55,0      | 55,0      | 55,0      |
|      | 00-249,999 | 00-249,999 | 00-69,999 | 00-69,999 | 00-69,999 |
|      |            |            |           |           |           |
|      | 250,0      | 250,0      | 70,0      | 70,0      | 70,0      |
|      | 00-274,999 | 00-274,999 | 00-84,999 | 00-84,999 | 00-84,999 |
|      |            |            |           |           |           |
|      | 275,0      | 275,0      | 85,0      | 85,0      | 85,0      |
|      | 00-299,999 | 00-299,999 | 00-99,999 | 00-99,999 | 00-99,999 |
|      |            |            |           |           |           |
|      | \> or =    | \> or =    | \> or =   | \> or =   | \> or =   |
|      | 300,000    | 300,000    | 100,000   | 100,000   | 100,000   |
+------+------------+------------+-----------+-----------+-----------+

> Table C-5. Donut Area Sample Volume Groups and
>
> Precision Levels

+---------------+-------------------------+---------------------------+
| **For DONUT   |                         |                           |
| AREAS of      |                         |                           |
| NAAQS         |                         |                           |
| Nonattainment |                         |                           |
| or            |                         |                           |
| Maintenance   |                         |                           |
| Areas**       |                         |                           |
|               |                         |                           |
| **(Small      |                         |                           |
| Urban and     |                         |                           |
| Rural         |                         |                           |
| Systems,      |                         |                           |
| Combined)**   |                         |                           |
+---------------+-------------------------+---------------------------+
| AADT          | Minor Arterial          | Major Collector,          |
|               |                         | Collector                 |
| Volume Group  |                         |                           |
+---------------+-------------------------+---------------------------+
|               | (90-10)                 | (90-10)                   |
+---------------+-------------------------+---------------------------+
| 1             | 0- 2,499                | 0- 2,499                  |
|               |                         |                           |
| 2             | 2,500- 4,999            | 2,500- 4,999              |
|               |                         |                           |
| 3             | 5,000- 9,999            | 5,000- 9,999              |
|               |                         |                           |
| 4             | 10,000-14,999           | 10,000-14,999             |
|               |                         |                           |
| 5             | \> or = 15,000          | \> or = 15,000            |
+---------------+-------------------------+---------------------------+