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This library of free downloadable content includes white papers, guides, infographics, case studies, industry analysis, and other resources provided by the California Transit Association, and outside experts and vendors within the transportation industry. After downloading content, you may be contacted by the provider. For more information on posting content in the Knowledge Hub, please click here.

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Friday, February 13, 2026 Clear-Vu Lighting

When the Lights Must Work: Choosing the Right Battery Chemistry for Tunnel Emergency Lighting

Your tunnel emergency lights sit dormant for years, then must work instantly when everything else fails. This whitepaper examines why the battery chemistry you specify determines whether those lights perform or fail when it matters most.

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