[Code of Federal Regulations]
[Title 49, Volume 1]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR38.39]

[Page 548]
 
                        TITLE 49--TRANSPORTATION
 
          SUBTITLE A--OFFICE OF THE SECRETARY OF TRANSPORTATION
 
PART 38--AMERICANS WITH DISABILITIES ACT (ADA) ACCESSIBILITY SPECIFICATIONS FOR TRANSPORTATION VEHICLES--Table of Contents
 
                   Subpart B--Buses, Vans and Systems
 
Sec. 38.39  Destination and route signs.

    (a) Where destination or route information is displayed on the 
exterior of a vehicle, each vehicle shall have illuminated signs on the 
front and boarding side of the vehicle.
    (b) Characters on signs required by paragraph (a) of this section 
shall have a width-to-height ratio between 3:5 and 1:1 and a stroke 
width-to-height ratio between 1:5 and 1:10, with a minimum character 
height (using an upper case ``X'') of 1 inch for signs on the boarding 
side and a minimum character height of 2 inches for front ``headsigns'', 
with ``wide'' spacing (generally, the space between letters shall be 1/
16 the height of upper case letters), and shall contrast with the 
background, either dark-on-light or light-on-dark.