3_1: Introduction

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RoadwaysIntroduction 97Roadway Design Principles 98Safe Speeds 99Optimizing Use of Street Space 100Minimum Lane Widths in the City of Boston 102Design Features that Reduce Operating Speeds 105Travel Lanes 113Transit Lanes 121Bicycle Facilities 127

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2013 Boston transportation DepartmentBoston Complete streets GuiDelines

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201396 Boston transportation DepartmentBoston Complete streets GuiDelines

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2013

Boston’s network of roads has been built over centuries, with streets first designed for walking, horses, and carriages. Over time, as existing streets were re-purposed and new street grids were built to accommodate the city’s growth, they became dominated by automobiles. This chapter covers roadway design in the space between curbs. It presents techniques to rebalance the travel-lane needs of different types of users—bicycles, automobiles, delivery trucks, and transit vehicles—within Boston’s narrow rights-of-ways.

Roadways3

97Boston Complete streets GuidelinesBoston transportation department

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