{"id":935,"date":"2013-01-07T12:00:27","date_gmt":"2013-01-07T12:00:27","guid":{"rendered":"http:\/\/briansolomon.com\/trackingthelight\/?p=935"},"modified":"2013-01-07T12:03:15","modified_gmt":"2013-01-07T12:03:15","slug":"trains-of-yesteryear-stateline-tower-january-7-1996","status":"publish","type":"post","link":"http:\/\/briansolomon.com\/trackingthelight\/trains-of-yesteryear-stateline-tower-january-7-1996\/","title":{"rendered":"Trains of Yesteryear: Stateline Tower, January 7, 1996"},"content":{"rendered":"

On this day in 1996, I was on a whirlwind tour of Chicagoland with the late Mike Abalos. We began our photography at Santa Fe\u2019s Willow Springs yard and worked our way east through the industrial areas south of the Loop. My primary interest was photographing the myriad varieties of signaling active in the Chicago area<\/a>, and Mike was just the man to get me to all the right places. This image was made near the end of daylight at State Line Tower. Throughout the day I was primarily using Kodachrome 25,working with my Nikon F3T, so this hastily composed photo was no exception. I was more interested in capturing the old Baltimore & Ohio<\/a> Color Position Light<\/a> signal than the CP Rail<\/a> train about to pass it.<\/p>\n

\"Color<\/a>
A Canadian Pacific SD40 (former Soo Line<\/a>) receives a \u2018Medium<\/a> Clear\u2019 on CSX<\/a>\u2019s old Baltimore & Ohio Chicago Terminal line at State Line Tower on the evening of January 7, 1996. Nikon F3T with a Nikkor<\/a> f1.8 105mm lens; K25 slide film.<\/figcaption><\/figure>\n

B&O\u2019s unusual Color Position Light signals use a single-head to display all aspects. Key to interpreting the signal is the position of the white light that modifies the basic aspect. A \u2018clear\u2019 aspect is represented with two green lights in a vertical pattern (mimicking an upper quadrant semaphore) with a white light directly above them; when the white light is directly below the two greens, the aspect is \u2018medium clear.\u2019 With conventional color light signals a \u2018medium clear\u2019 may be represented with a three-head signal by red-over-green-over-red, or on a high two-head signal as red-over-green. The essential difference between \u2018clear\u2019 and \u2018medium clear\u2019 is the maximum speed allowed through an interlocking. A \u2018clear\u2019 aspect permits maximum track speed while a \u2018medium clear\u2019 limits speed typically to 30 mph. While fading light isn\u2019t the best time to photograph moving trains, it is however a great time to photograph signals (because the signal lights appear brighter in comparison with ambient conditions). Thank you<\/i> Mike!<\/p>\n

Interested in railroad signals<\/a>? See my book Railroad Signaling<\/a> available from Voyageur Press\/Quayside Publishing<\/p>\n

\"Enhanced<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

On this day in 1996, I was on a whirlwind tour of Chicagoland with the late Mike Abalos. We began our photography at Santa Fe\u2019s Willow Springs yard and worked our way east through the industrial areas south of the Loop. My primary interest was photographing the myriad varieties of signaling active in the Chicago … Continue reading Trains of Yesteryear: Stateline Tower, January 7, 1996<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"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":[4537,148,147,35,43,9,45,33],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2BVuC-f5","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/935"}],"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=935"}],"version-history":[{"count":7,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/935\/revisions"}],"predecessor-version":[{"id":1073,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/posts\/935\/revisions\/1073"}],"wp:attachment":[{"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/media?parent=935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/categories?post=935"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/briansolomon.com\/trackingthelight\/wp-json\/wp\/v2\/tags?post=935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}