Federal Highway Administration
400 Seventh Street, SW
Washington, DC 20590

Refer to: HOTO-1

Mr. Michael K. Curtit
Technical Support Engineer
Missouri Department of Transportation
105 West Capital Avenue
Jefferson City, MO 65102

Please accept our apologies for the delay in replying to the October 2, 2000, letter from Mr. Tom Ryan of your St. Louis District Office. In that letter, Mr. Ryan provided the follow-up information that we requested in our September 15, 2000, reply to your request to experiment with pedestrian countdown displays, number IV-168(E).

We have reviewed the information Mr. Ryan submitted and we approve of the experimentation. However, to be consistent with other experimentations on pedestrian countdown displays being conducted around the country, it is requested that your experimentation at the intersection in South St. Louis County include the following:

1. Please use the mode of operation that only displays the countdown during the flashing DON’T WALK interval.
2. We are enclosing a sample form to use for data collection. Please use the following guidelines. We are asking for these data items to be collected in all experiments so the results can be easily compared across the country.
   • Data should be collected before and after installation of the countdown signal.
   • A large number of pedestrian observations should be made (100+).
   • Data should be collected during the same time period and on the same day of the week.
   • Observations of pedestrian and driver behavior should be collected along with survey data.
   • Pedestrian data that should be collected as a minimum:
     1. Compliance with the pedestrian signal. When pedestrian arrive at the corner, do they cross with the WALK, the flashing DONT WALK, or the solid DON’ WALK?
     2. When pedestrians finish crossing, is it during the WALK, the flashing DON’T WALK, or the solid DON’T WALK?
     3. Is the pedestrian male or female?
     4. What is the pedestrian’s age group? (0-17, 18-64, or 65+)
     5. How was the crossing accomplished? (For Example: ran across, walked across, aborted the crossing, there was a conflict with a vehicle, or combination of the above)
     6. Note whether the observance was of a pedestrian walking alone or in a group.
   • Driver data (parallel to the pedestrian crossing) that should be collected as a minimum:
     1. What was the signal display during arrival at the intersection (GREEN ARROW, CIRCULAR GREEN, YELLOW, YELLOW ARROW, RED, RED ARROW)?
     2. What was the vehicle’s maneuver (straight through, right turn, left turn)?
     3. What was the signal display as the vehicle proceeds through the intersection (GREEN ARROW, CIRCULAR GREEN, YELLOW, YELLOW ARROW, RED RED ARROW)?
     4. Was there a conflict with a pedestrian?
   • In your pedestrian surveys, please make sure the questions are asked in a manner that will indicate whether the pedestrian understands what the signal indications mean. Please include the following question, "Do you interpret the combination of the flashing DON’T WALK and the numbers to mean it is legal to enter the crosswalk on a flashing DON’T WALK as long as you can reach either the median or the other side prior to the countdown device reaching zero?" We also suggest you phrase questions so the pedestrian has to explain or select the meaning of the indications (multiple choice answers). For example: What does the WALK indication mean? What does the flashing DON’T WALK mean? What does the solid DON’T WALK mean? What do the numbers indicate to you? Do you cross any differently with the countdown signal than with traditional pedestrian signals?

We would appreciate receiving your updated schedule for implementation and submission of evaluation reports based on this approval of experimentation. At your convenience, please fax a copy of your updated schedule to Mr. Scott Wainwright at 202-366-3225.

Again, we are sorry for the delay in approving your experimentation. We look forward to receiving your evaluation reports.

Sincerely yours,

Shelley J. Row, P.E.
Director, Office of Transportation
Operations