[PDF][PDF] Visibility of circular traffic-signal indications
GF King - Transportation research record, 1981 - onlinepubs.trb.org
GF King
Transportation research record, 1981•onlinepubs.trb.orgVisibility of circular traffic-signal indications Page 11 two days per week). Of course, a school
speed zone is no different from any other form of traffic control in that, unless it is perceived by
the driver as fulfilling a Publication of this paper sponsored by Committee on Traffic Control
Devices. Visibility of Circular Traffic-Signal Indications GERHART F. KING An empirical
determination of traffic signal visibility is presented. The study used subjects seated in stationary
vehicles viewing standard, full-sized'trafflccontrol signals at distances ranging from 370 to 1300 …
speed zone is no different from any other form of traffic control in that, unless it is perceived by
the driver as fulfilling a Publication of this paper sponsored by Committee on Traffic Control
Devices. Visibility of Circular Traffic-Signal Indications GERHART F. KING An empirical
determination of traffic signal visibility is presented. The study used subjects seated in stationary
vehicles viewing standard, full-sized'trafflccontrol signals at distances ranging from 370 to 1300 …
Background Size of Distance Luminance Researcher Year Indication Colors Included(ft)(ft-L) Type of Study" Response Measure
onlinepubs.trb.org