Photo-Luminescent Safety Symbols & Signs

Safety Symbols

HPPL Interior Signs & Symbols

Visual Marking Systems was the first certified manufacturer of High Performance Photoluminescent (HPPL) graphics in the United States and passed outside testing as part of the certification process. All of our safety signs and symbols ship with proof of certification to be in compliance with American Public Transit Association (APTA) standards.

HPPL signage is an important standard throughout APTA because it directly aids in the safety of passengers and crew. Our specially formulated HPPL is fully charged after only one hour of exposure to natural or artificial light and glows for hours in total darkness ensuring that all passengers and crew members are able to locate the nearest exit in the event of a power failure.

VMS’ markings are fully compliant with FRA regulations as well as all smoke, flame and toxicity requirements. VMS’s photo-luminescent signs also exceed the APTA standards after 90 minutes in total darkness.

HPPL Charged and Uncharged

The APTA Definition of HPPL

A photoluminescent material that is capable of emitting light at a very high rate and for an extended period of time. For the APTA standard, the minimum luminance value for HPPL is 7.5 mcd/m2, for 1.5 hours after removal of the charging light source. Unless otherwise permitted by this standard, for rating purposes, the charging light source required is a fluorescent lamp with a color temperature of 4000-4500°K that provides an illuminance of no more than 1 foot candle for duration of no more than 1 hour.

Visual Marking Systems serves on the APTA board and has been an important influence behind the passing of several APTA standards regarding HPPL. Through our membership and involvement with APTA, we have stayed abreast on all new laws, regulations and information. This has directly assisted many of our customers with critical project planning. For more information about VMS’s HPPL products contact us online.

High Performance Photo-Luminescent (HPPL) Emergency Egress Markings

APTA SS-PS-002-98, Rev. 3 Standard for Emergency Signage for Egress/Access of Passenger Rail Equipment requires that all passenger rail vehicles contain HPPL interior signage to ensure that passengers and crew members find the nearest exit in the event of a power failure or other emergency.

There are stringent specifications detailing the performance of HPPL markings. All markings must be certified by an independent laboratory and the test results must be maintained by the authority. VMS has been independently certified to produce HPPL markings since 2008 and can provide all documentation required for your authority.

Photoluminescent Signs and Symbols

Emergency Egress: Exit Door and Emergency Window Exit Markings

All emergency door exits and emergency exit windows must be marked with the appropriate HPPL emergency egress marking. Window markings must also include step by step opening/removal instructions. Manual door opening instructions are also required. There are detailed specifications for the size, lettering contrast performance and location for each of these markings and VMS will help ensure compliance with all of these requirements by partnering with your authority to be your full turnkey HPPL service provider. Check out our online transit catalog for related APTA compliant products!

Exit Signs and Symbols

Download our Emergency & Exit Path Planning Quick Guide
This Quick Guide is intended to provide a reference for some of the markings required by APTA SS-PS-004-99 Rev. 2 Standard for Low-Location Exit Path Markings, APTA SS-PS-002-98 Rev. 3 Standard for Emergency Signage for Egress / Access of Passenger Rail Equipment and APTA RT-S-VIM-021-10 Emergency Signage for Rail Transit Vehicles, APTA RT-VIM-S-022-10 Low-Location Emergency Path Marking for Rail Transit Vehicles, and APTA RT-VIM-S-023-12 Emergency Egress/Access for Rail Transit Vehicles.

Please consult the APTA standards or a VMS Transportation Specialist for complete compliance requirements.


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