00743147

Component

https://doi.org/10.3141/1578-14

http://scholar.google.com...wart&publication_year=1997

This study was conducted for the Florida Department of Transportation with an objective of evaluating the safety and utility of shared-use facilities to provide engineers and planners comprehensive results that can be used in planning, designing, and constructing roadways to be shared by motorists and bicyclists. The results were developed from an analysis of observations of bicyclists and motorists interacting on different types of roadways. The evaluation included roadways with wide curb lanes, bicycle lanes, and paved shoulders. Locations from both rural and urban environments were included and varied in terms of motor-vehicle speed, traffic volume, lane width, and number of lanes. The operational measures of effectiveness used in evaluating the different types of facilities included (a) lateral placement of the bicyclist, (b) lateral placement on the motor vehicle, (c) separation distance between the bicycle and motor vehicle, and (d) encroachments by the motorist or bicyclist during the passing maneuver. Results of the analysis showed that the type of facility (wide curb lane versus bicycle lane versus paved shoulder) does have a significant effect on the separation distance between bicyclists and motor vehicles; this distance ranged from 1.80 to 1.95 m (5.9 to 6.4 ft). The findings also indicated that paved shoulders and bicycle lanes generally result in similar interactions between motorists and bicyclists and that when compared with wide curb lanes they offer some distance advantages to both user groups. The results also indicated that bicycle lanes as narrow as 0.92 m (3 ft) provide sufficient space for motorists and bicyclists to interact safely. At the same time, a 1.22-m (4-ft) wide bicycle lane tended to optimize operating conditions because there were very few differences in the measures of effectiveness when 1.22-m lanes were compared with wider lanes.

This paper appears in Transportation Research Record No. 1578, Pedestrian and Bicycle Research 1997.

English

p. 111-118

1997

Transportation Research Record

0309061687

Figures (4) ; Photos (2) ; References (2) ; Tables (6)

Bicycle lanes; Curbs; Following distance; Highway design; Lateral placement; Measures of effectiveness; Motor vehicles; Paved shoulders; Right of way (Land); Rural areas; Speed; Traffic lanes; Traffic speed; Traffic volume; Urban areas; Vehicle spacing; Width

Lane width; Wide curb lanes

Design; Highways; Pedestrians and Bicyclists; Planning and Forecasting; Terminals and Facilities; I21: Planning of Transport Infrastructure; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Nov 19 1997 12:00AM

• ANALYSIS OF BICYCLE COMMUTER ROUTES USING GEOGRAPHIC INFORMATION SYSTEMS: IMPLICATIONS FOR BICYCLE PLANNING
• BICYCLE JOURNEY-TO-WORK: TRAVEL BEHAVIOR CHARACTERISTICS AND SPATIAL ATTRIBUTES
• BICYCLIST PERFORMANCE ON A MULTIUSE TRAIL
• EFFECT OF SITE DESIGN ON PEDESTRIAN TRAVEL IN MIXED-USE, MEDIUM-DENSITY ENVIRONMENTS
• IF YOU BUILD THEM, COMMUTERS WILL USE THEM: ASSOCIATION BETWEEN BICYCLE FACILITIES AND BICYCLE COMMUTING
• INFLUENCE OF ENVIRONMENTAL DESIGN ON PEDESTRIAN TRAVEL BEHAVIOR IN FOUR AUSTIN NEIGHBORHOODS
• INTEGRATED SYSTEMS METHODOLOGY FOR PEDESTRIAN TRAFFIC FLOW ANALYSIS
• PEDESTRIAN FATALITIES ON INTERSTATE HIGHWAYS: CHARACTERISTICS AND COUNTERMEASURES
• PEDESTRIAN IMPEDANCE OF TURNING-MOVEMENT SATURATION FLOW RATES: COMPARISON OF SIMULATION, ANALYTICAL, AND FIELD OBSERVATIONS
• REAL-TIME HUMAN PERCEPTIONS: TOWARD A BICYCLE LEVEL OF SERVICE
• RENEWED COMMITMENT TO TRAFFIC CALMING FOR PEDESTRIAN SAFETY
• SAFETY BENEFITS OF TRAFFIC CALMING
• SKETCH-PLAN METHOD FOR ESTIMATING PEDESTRIAN TRAFFIC FOR CENTRAL BUSINESS DISTRICTS AND SUBURBAN GROWTH CORRIDORS
• SURVEY OF NORTH AMERICAN BICYCLE COMMUTERS: DESIGN AND AGGREGATE RESULTS
• USING AUDITORY PEDESTRIAN SIGNALS TO REDUCE PEDESTRIAN AND VEHICLE CONFLICTS