Abstract
Method of calculating of transition curve required for design of roads turns, procedure of its construction insitu and its impact on ecological safety and reliability are presented. Questions of transition curves construction are considered. Analysis of calculation of trackway broadening is presented. Problems of clothoid application when tracing for organization of smooth slopes and increase of traffi c safety level are pulled down. Improvement of operational characteristics of design, construction and operation of roads develops production and economic level of road-construction enterprises, improves quality, reduces cost and improves ecological indexes of road-building materials, raises the eff ectiveness and ensures road traffi c safety.
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