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Publication No. FHWA-HRT-05-114. Bicycle Lanes. Lesson 15. Lesson Outline. Width standards. Retrofitting lanes on existing streets. Design at intersections and interchanges. Pavement marking and signing. Other design considerations. Practices to avoid. Width Standards.

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Bicycle Lanes

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Bicycle lanes

Publication No. FHWA-HRT-05-114

Bicycle Lanes

Lesson 15


Lesson outline

Lesson Outline

  • Width standards.

  • Retrofitting lanes on existing streets.

  • Design at intersections and interchanges.

  • Pavement marking and signing.

  • Other design considerations.

  • Practices to avoid.


Width standards

Width Standards

  • No curb and gutter: 1.2 meters (m) (4 feet (ft)) min.

    • If parking, then 1.5 m (5 ft) min.

  • With curb and gutter: 1.5 m (5 ft) min.

    • 0.9 m (3 ft) min. ridable surface, not including gutter pan.

  • Parking permitted but not striped:

    • 3.3 m (11 ft) total with no curb.

    • 3.5 m (12 ft) total with curb.


Retrofitting bike lanes

Retrofitting Bike Lanes

Typical “Road Diet”

  • Reduce travel lane widths.

  • Reduce number of travel lanes.

  • Remove, narrow, or reconfigure parking.

  • Other design options.


Road diet

Road Diet

Before

After


Bike lanes at intersections

Bike Lanes at Intersections

  • Encourage crossing/merging in advance of intersection.

  • Use of broken lane stripe at bus stops and intersections.

  • Many possible configurations.

  • Avoid dual right-turn lanes if possible.


Bike lanes at interchanges

Bike Lanes at Interchanges

  • Cross high-speed ramps in areas of good visibility.

  • Cross ramps at right angle.

  • Consider grade separation.


Pavement markings

Pavement Markings

Bike lane symbols

  • Edgeline lane markings.

  • Bike lane symbols.

  • Traffic signal detector placement.

  • Obstructions.


Signing

Regulatory signs

Signing

  • Use of MUTCD.

  • Consistency in shape, legend, color.

  • Regulatory signs.

  • Warning signs.

  • Route guide signs.


Colored bike lanes

Colored Bike Lanes

  • Common in Europe.

  • Delineate the preferred paths through complex intersections or across high-speed ramps.

  • Tested in Portland, OR, with mixed results.


Contraflow bike lanes

Contraflow Bike Lanes

  • Prevent circuitous travel on one-way streets.

  • High bike demand.

  • Warning signs at intersecting alleys and streets.

(This picture shows a bicyclist not wearing a helmet.

FHWA strongly recommends that all bicyclists wear helmets.)


Practices to avoid

Practices to Avoid

  • Two-way bike lanes.

  • Continuous right-turn lanes.


Lesson summary

Lesson Summary

  • There are many ways to design for bicycle lanes on vehicular roadways.

  • Use of specific design elements create safe and efficient bicycle lanes.


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