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2007•RePEc: Research Papers in EconomicsOpen access

Effectiveness of California’s High Occupancy Vehicle (HOV) System

Pravin Varaiya

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Abstract

This is the most extensive empirical evaluation of the effectiveness of California’s HOV system based on data collected from traffic sensors. The evaluation leads to four major conclusions. (1) Since it operates as a single lane freeway, an HOV lane suffers a 20 % capacity loss compared with multi-lane freeways. (2) HOV lanes are either under-utilized or suffer degraded operations. (3) HOV lanes do not measurably increase car-pooling. (4) HOV lanes do not reduce overall congestion in a reasonably well-managed system.

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What this paper is about

This is the most extensive empirical evaluation of the effectiveness of California’s HOV system based on data collected from traffic sensors. The evaluation leads to four major conclusions. (1) Since it operates as a single lane freeway, an HOV lane suffers a 20 % capacity loss compared with multi-lane freeways. (2) HOV lanes are either under-utilized or suffer degraded operations. (3) HOV lanes do not measurably increase car-pooling. (4) HOV lanes do not reduce overall congestion in a reasonably well-managed system.

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Available abstract

This is the most extensive empirical evaluation of the effectiveness of California’s HOV system based on data collected from traffic sensors. The evaluation leads to four major conclusions. (1) Since it operates as a single lane freeway, an HOV lane suffers a 20 % capacity loss compared with multi-lane freeways. (2) HOV lanes are either under-utilized or suffer degraded operations. (3) HOV lanes do not measurably increase car-pooling. (4) HOV lanes do not reduce overall congestion in a reasonably well-managed system.

Key concepts: Occupancy, Transport engineering, Traffic congestion, Travel time, Engineering, Environmental science, Civil engineering

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