00742508

Component

The Finnish design practice for unsignalized intersections is divided into three categories according to the type of road environment: urban, rural built-up, and rural. The Finnish National Road Administration (FinnRA) has worked out design guidelines for each of these categories. In addition, the cities also use guidelines of their own. FinnRA guidelines for at-grade intersections will be updated in the near future. In recent years capacity and design studies have mainly concentrated on roundabouts. As a result, a new type of roundabout has been introduced in the guidelines with good results. In the future one of the main fields in capacity research will be the development and updating of present capacity calculation methods and base values, although no decisions concerning a new capacity model have been made. In addition, simulation of unsignalized junctions will be an important area of research, in which further calibration and validation of the Finnish HUTSIM program will be an essential part.

English

p. 197-205

1997-7

Third International Symposium on Intersections Without Traffic Signals

Figures (3) ; References (37) ; Tables (1)

At grade intersections; Design; Environmental quality; Highway capacity; Intersections; Roadside; Roundabouts; Unsignalized intersections

Design features; Intersection capacity

Design; Environment; Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB, USDOT

Nov 5 1997 12:00AM

• A CAPACITY ANALYSIS PROCEDURE FOR UNSIGNALIZED INTERSECTIONS IN SWITZERLAND
• A DISCUSSION OF CORNER SIGHT DISTANCE REQUIREMENTS AT STOP-CONTROLLED INTERSECTIONS WITHIN NEW YORK CITY
• A GAME THEORETICAL ANALYSIS OF INTERACTION BETWEEN MERGING AND THROUGH CARS AT ON-RAMPS
• ACCESS MANAGEMENT IN PRACTICE: THE PRETORIA EXPERIMENT
• AN ALTERNATIVE PROCEDURE FOR ESTIMATING GAP ACCEPTANCE PARAMETERS BASED ON AGGREGATE FLOW DATA
• CAPACITY AND LEVEL OF SERVICE OF UNSIGNALIZED INTERSECTIONS: NEW PRACTICES IN THE UNITED STATES
• CAPACITY OF SHARED/SHORT LANES AT UNSIGNALIZED INTERSECTIONS
• CAPACITY STUDIES AND THEIR APPLICATIONS IN JAPAN
• COUNTRY REPORT - AUSTRALIA
• CURRENT CAPACITY PROCEDURES AND RESEARCH ON UNSIGNALIZED INTERSECTIONS IN POLAND
• CURRENT HIGHWAY DESIGN AND CAPACITY ANALYSIS PRACTICES IN BRAZIL
• DESIGN OF SMALL ROUNDABOUTS - POLISH GUIDELINES
• DEVELOPMENT OF SIMULATION MODELS FOR THREE- AND FOUR-LEG AWSC INTERSECTIONS USING GPSS.
• EFFECTS OF VEHICULAR BEHAVIOR AT THE PRE-ACCIDENT STAGE ON DECISION-MAKING AT INTERSECTIONS WITHOUT SIGNALS
• ESTIMATING THE SAFETY OF UNSIGNALIZED INTERSECTIONS USING TRAFFIC CONFLICTS
• ESTIMATION OF TRAFFIC QUEUES AND DELAYS AT ROUNDABOUT ENTRIES
• EXTENSIONS OF THEORETICAL CAPACITY MODELS TO ACCOUNT FOR SPECIAL EFFECTS OF TWO-STAGE GAP ACCEPTANCE; FLARED MINOR-STREET APPROACH; UPSTREAM SIGNALS; PEDESTRIAN CROSSINGS; AND DELAY TO MAJOR-STREET THROUGH VEHICLES
• IMPLEMENTING THE MAXIMUM LIKELIHOOD METHODOLOGY TO MEASURE DRIVER'S CRITICAL GAP
• LIMITED PRIORITY MERGE AT UNSIGNALIZED INTERSECTIONS
• MEASURES OF EFFECTIVENESS FOR THE EVALUATION OF INTERSECTIONS
• MEDIAN OPENING DECISION PROCESS
• OMNIDIRECTIONAL VIDEO INSTRUMENTATION FOR UNSIGNALIZED INTERSECTIONS AND ROUNDABOUTS
• SAFETY AT HIGHWAY JUNCTIONS BASED ON PREDICTIVE ACCIDENT MODELS
• SIMULATION AND CAPACITY CALCULATION OF INTERSECTIONS WITHOUT TRAFFIC SIGNALS - A DISCUSSION AND A ROUNDABOUT CASE STUDY