Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ BEFORE-AFTER ACCIDENT ANALYSIS FOR TWO SHOULDER UPGRADING ALTERNATIVES https://trid.trb.org/View/182267 Fri, 30 Dec 1983 00:00:00 GMT https://trid.trb.org/View/182267 OPERATIONAL AND SAFETY EFFECTS OF DRIVING ON PAVED SHOULDERS IN TEXAS https://trid.trb.org/View/171674 Tue, 30 Mar 1982 00:00:00 GMT https://trid.trb.org/View/171674 EFFECTS OF PAVED SHOULDERS ON ACCIDENT RATES FOR RURAL TEXAS HIGHWAYS https://trid.trb.org/View/174267 Tue, 30 Mar 1982 00:00:00 GMT https://trid.trb.org/View/174267