NTL Record

Title Traffic Operations Control for Older Drivers
Record ID 79111
Personal Name
Creator
Zegeer, C.; Popkin, C.
Personal Name
Contributor
Bissell, Howie
Corporate Creator Center for Applied Research
Corporate
Contributor
United States. Federal Highway Administration. Office of Safety and Traffic Operations R&D
Publisher United States. Federal Highway Administration
Publication Date 19950301
Language English
Abstract The objectives of this project were to define the problems older drivers and pedestrians have at intersections, and make recommendations for changes. A literature review, a detailed accident analysis, and eight focus groups were conducted to identify the specific kinds of traffic-control-related problems experienced by older drivers and pedestrians at intersections. Three problem areas were targeted. The Left-Turn Signal Comprehension Study examined the lack of understanding associated with a variety of protected and permitted left-turn signal displays. It was found that many drivers, young and old alike, do not understand the protected / permitted signal phasing. Efforts to improve motorist comprehension of left-turn signal phasing should be targeted at the entire driving population. Older pedestrians frequently indicated that they don't have enough time to cross the street. This complaint is exaggerated by the lack of understanding of the clearance - flashing DON'T WALK - phase. The pedestrian Signal Comprehension Study involved the development and evaluation of a pedestrian signal explanation placard. The wording of the placard was empirically developed Field-testing failed to demonstrate a change in pedestrian comprehension or compliance. However, the placard did produce a small but significant increase in pedestrian comprehension level. Recommendations for the wording of the pedestrian signal education placard are made. The Drive Signal Response and Stopping Behavior Study compared the responses of older and younger drivers to amber onset and the braking ability of older and younger drivers. Testing was done in a controlled field-test facility with the subjects driving their own cards. No important differences between older and younger drivers were found. Current standards for amber signal duration and red signal onset do not need to be modified.
Rosap ID dot:54320
Rosap URL https://rosap.ntl.bts.gov/view/dot/54320
TRT Terms Highway operations; Signalization; Left turns; Aged drivers; Pedestrian actuated controllers
Geographical
Coverage
United States
TRIS Online
Accession No
676582
Contract Number DTFH61-92-C-00033
Report Number FHWA-RD-94-119
Resource type Tech Report
URL https://ntlrepository.blob.core.windows.net/lib/79000/79100/79111/008124.pdf
Format PDF
Database NTL Digital Repository