[sustran] Re: Bus Segregation, Car equivalents of BUS

[sutp]

Hello Kiran,

 

The concept of passenger car equivalent (PCE) has also been documented in Highway Capacity Manual (2000) from the U.S.  It lists PCEs of buses/trucks for various highway facilities, such as Freeways, Multilane highways, Signalized intersections, etc.  The numbers were based on surveys done in the US.  However, one should be cautious in applying the numbers to other geographical region, because many things are different including traffic conditions, driver behaviors, technology, new buses Vs old buses, etc.  

 

Regarding the Segregation of Bus Lane, I’d like to recommend an article named “Public Transport Reforms in Seoul: Innovations Motivated by Funding Crisis” by Pucher et al, Journal of Public Transportation, Vol.8, No. 5, 2005.  It contains the before - after studies of the Seoul Bus Reform project, and particularly compared the speeds of buses and cars on three major streets that recently utilize a central bus-only lane.   When buses are segregated, both speeds of buses and cars improved.  Two reasons:

 

1. The increase in bus operating speed attracts more passengers: some travelers switched from driving their own car to taking buses.

2. When bus operation mix with normal traffic, buses tend to run erratically crossing from lanes to lanes.  Many times, they stop to board and alight passenger on the center lane or even the median lane, causing a temporarily bottleneck on the street section.  Segregate bus operation therefore terminates the traffic interruptions from buses.

 

Best Regards,

Thirayoot

 

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From: sustran-discuss-bounces+sutp=sutp.org at list.jca.apc.org [mailto:sustran-discuss-bounces+sutp=sutp.org at list.jca.apc.org] On Behalf Of B Sriram
Sent: 4 เมษายน 2549 20:20
To: sustran-discuss at list.jca.apc.org
Subject: [sustran] Bus Segregation, Car equivalents of BUS

 

Hello All,

 

I am new member to this group. I am research student from India. It is said that a BUS is equivalent to 3 passenger cars. But I also find there is lot of debate on this value. Can anyone suggest what values should be taken?

 

I have also read some reports about Bagota, and also some discussions in this group, which suggest that segregation of buses helps improve regular traffic as well as buses as they get dedicated lanes.

 

How can I quantify that this segregation indeed improves the regular traffic ?

 

Are  there any published reports which can justify this. 

 

My main constraint is space. I will have to extract a lane from the existing carraigeway as it is bound by private property.

 

Thanks

 

Kiran

Research Student

Ahmedabad 

India

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