The field study was a dynamic recognition and legibility test using full-sized retroreflective signs during the day and at night. Prior to a recent change in law, research showed that the Clearview font was.
CLEARVIEW FONT TXDOT CHANGE UPDATE
The laptop survey used static, in-context sign images to compare sign fonts. Thats why Texas and many other states started to update their road signs. The researchers performed a laptop-based presentation survey and a closed-course field study. The headwall cell library for box and pipe culverts includes most sizes, wingwall slopes, and skews from TxDOT standards. TxDOT H&H section will consider and explore other curb and gutter sections if needed. This research project evaluated the negative contrast Clearview font in black letters on fluorescent yellow, fluorescent orange, and white backgrounds. The TxDOT Type II - 6 standard gutter typically used in urban storm sewer sections has been included. Prior to this research project, there were no studies documenting the performance of the Clearview font for negative contrast signs such as those found in the regulatory and warning sign series.
CLEARVIEW FONT TXDOT CHANGE SERIES
Black legends must not use the Clearview font, but will use the standard FHWA Highway Series lettering (B, C, D, E, E modified, or F). The Clearview font has been developed with two sets of fonts-one for positive contrast signs and another for negative contrast signs. White legends on green, blue, and brown background signs must be designed using the Clearview font (except route signs). These results have helped support the adoption of the Clearview font into the Federal Highway Administration's (FHWA) Standard Highway Signs book. Additional studies have shown that Clearview outperforms other versions of Highway Gothic fonts on other, smaller types of guide signs. Texas Department of Transportation (TxDOT) sponsored research has shown that the Clearview font provides longer legibility distances than the Highway Gothic font Series E (Modified) when used on freeway guide signs with positive contrast of white letters on a dark background.
Where multiple signs exist on a sign structure or where signs are grouped closely together and the need arise to replace a sign, it may become necessary to replace all the signs in the vicinity to maintain corridor aesthetics. Evaluation of the Clearview Font for Negative Contrast Traffic Signs. The use of Clearview font for replacement signs will be determined on a case-by-case basis. Prior studies have also shown that the Clearview font provides increased legibility for positive contrast overhead and ground-mounted guide signs when compared to existing fonts 1-6.
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