{"id":9542,"date":"2015-01-03T02:15:39","date_gmt":"2015-01-03T07:15:39","guid":{"rendered":"http:\/\/briansolomon.com\/trackingthelight\/?p=9542"},"modified":"2014-12-24T08:27:24","modified_gmt":"2014-12-24T13:27:24","slug":"pennsylvania-railroad-signals-on-the-main-line","status":"publish","type":"post","link":"http:\/\/briansolomon.com\/trackingthelight\/pennsylvania-railroad-signals-on-the-main-line\/","title":{"rendered":"Pennsylvania Railroad Signals on the Main Line."},"content":{"rendered":"

A descriptive sequence of photos at Bryn Mawr.<\/strong><\/p>\n

Pennsylvania Railroad\u2019s chief signal engineer A.H. Rudd developed the position light signal during the World War I years and the railroad refined the type into its classic form in the 1920s. There after, the railroad installed\u00a0large numbers\u00a0of this\u00a0unusual type of signal along its lines.<\/p>\n

While\u00a0in recent years this type of hardware has fallen out of favor, or been adapted into\u00a0a form of colored position light, there are a few places where classic PRR-style position lights survive.<\/p>\n

The former Pennsylvania Railroad Main Line west of Philadelphia is one of the last bastions for these traditional signals.<\/p>\n

In December, Pat Yough and I spent several evenings photographing the old PRR position lights at work.<\/p>\n

\"Pennsylvania<\/a>
Pennsylvania Railroad Position Light signal at Bryn Mawr, Pennsylvania. Time exposure made with a Canon EOS 7D 100mm lens mounted firmly on a Bogen tripod. ISO400 f4 at 3.2 seconds.<\/figcaption><\/figure>\n

\"Bryn_Mawr_Rule_291_Restricted_Proceed_with_train_IMG_8679\"<\/a><\/p>\n

\"Bryn_Mawr_Rule_291_Restricted_Proceed_with_train_IMG_8680<\/a><\/p>\n

\"Approach.\"<\/a>
Approach.<\/figcaption><\/figure>\n
\"Proceed.\"<\/a>
Proceed.<\/figcaption><\/figure>\n

I made\u00a0this sequence of\u00a0images near the now-closed tower at Bryn Mawr, Pennsylvania. Interested in learning more about signals? My book, Railroad Signaling is available from Voyageur Press<\/a>. My new book, Classic Railroad Signals is anticipated for publication later this year.<\/p>\n

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 <\/p>\n","protected":false},"excerpt":{"rendered":"

A descriptive sequence of photos at Bryn Mawr. Pennsylvania Railroad\u2019s chief signal engineer A.H. Rudd developed the position light signal during the World War I years and the railroad refined the type into its classic form in the 1920s. There after, the railroad installed\u00a0large numbers\u00a0of this\u00a0unusual type of signal along its lines. While\u00a0in recent years … Continue reading Pennsylvania Railroad Signals on the Main Line.<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":9541,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_s2mail":"yes","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"footnotes":"","_jetpack_memberships_contains_paid_content":false,"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[10],"tags":[3786,4537],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/briansolomon.com\/trackingthelight\/wp-content\/uploads\/2014\/12\/Bryn_Mawr_tower_and_signal_train_passing_clear_P1110737.jpg?fit=800%2C534","jetpack_shortlink":"https:\/\/wp.me\/p2BVuC-2tU","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/9542"}],"collection":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/comments?post=9542"}],"version-history":[{"count":2,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/9542\/revisions"}],"predecessor-version":[{"id":9544,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/9542\/revisions\/9544"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media\/9541"}],"wp:attachment":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media?parent=9542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/categories?post=9542"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/tags?post=9542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}