I-95 Project

Objective:

The goal of the I-95 Corridor Mile Marker and Ramp Designation Signing study was to determine the best design of mile markers and find the best way to represent ramp signs, so that motorists who are stationary or driving can pinpoint their location and relay it to first responders.

Equipment:

A traffic sign legibility modeling program called Tarvip, a computer-based sign comprehension analysis, and an instrumented car equipped with an audio and video recorder and a DMI system.

EXPERIMENTAL DESIGN:

Tarvip modeling program was used to provide the letter height and the legibility distance of the mile marker and ramp signs, while the comprehension analysis provided the design, content, and layout of the signs. The test track validated the results from Tarvip and the comprehension analysis.

Results:

The Manual on Uniform Traffic Control Devices (MUTCD) D10-3 sign was found to have the best design, layout, and content for a Reference Location sign. The MUTCD D10-3a sign had the best design, layout, and content for an Intermediate Reference Location Sign. The MUTCD D10-4 sign had the best design, layout, and content for an Enhanced Reference Location Sign. The sign that had the best design, layout, and content for an Intermediate Enhanced Reference Location Sign was the Indiana mile marker. With regard to ramp signs, the GA.2 was found to have the best design, layout, and content when it came to pinpointing a specific location on a ramp.

GA.2

MUT CD

D10-3a

MUT CD

10-3