In 1961 the Chicago Transit Authority (CTA) purchased two small rail grinders to remove irregularities (corrugations) from steel rails so as to reduce the high-frequency fluttering noise that is produced by trains passing over a corrugated rail. The grinders were pushed or pulled in tandem by motorized work cars, but because of their size and light weight could be operated only at a restricted speed while making repeated passes over a short stretch of track. The operation could be performed during midnight hours only. A new rail smoother has now been installed that can be operated between regularly scheduled runs; its first operational test was on the Skokie Swift line of CTA. No special crew is required.
- Publication Date: 0
- Features: Photos;
- Pagination: 24 p.
- Volume: 68
- Issue Number: 4
- Publisher: Bobit Publishing Company
- TRT Terms: Maintenance of way; Noise; Noise control; Rail grinding; Railroad tracks; Rapid transit
- Identifier Terms: Chicago Transit Authority
- Subject Areas: Environment; Maintenance and Preservation; Public Transportation; Railroads;
- Accession Number: 00050895
- Record Type: Publication
- Files: TRIS
- Created Date: Feb 15 1982 12:00AM