## Elements of Curve Design for Road, Railway & Racing Track on Natural Transition Principles: With Special Notes on Road Planning in Terms of British and Metrical Units |

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### Contents

Introduction | 5 |

Transition Curves | 35 |

Setting out Transition Curves when | 47 |

Copyright | |

7 other sections not shown

### Common terms and phrases

30 miles alignment apex apply approx approximately assume base line calculated central angle centrifugal force centrifugal sensation chain chord length chord point circle deflection circular arc circular curve constant corresponding cubic parabola degree of curvature deviation angle Diff distance edge equal chords example flange given centrifugal ratio given speed gives Hence inches per second kilometres per hour l°of lemniscate length of transition limit maximum speed measured metrical miles an hour miles per hour minimum radius motorist natural transition normal gauge offset ordinate origin osculating circle polar deflection angle polar ray practice radii railways rate of change right angle bend road curves road deviation road engineers road traffic small angles standard straight suitable superelevation ratio tangent tangential component theodolite theoretical speed tion total deflection transition curve transitional throughout unit chord unit deflection vide Vsin whence width zero