Saturday, April 5, 2008

[MyTuneBD.Com] Knowledge-based Transport Planning and Rickshaw Bans

By Mahabubul Bari
Dhaka, Bangladesh -
The New Nation
rickshawtraffic.jpgFor several years, discussion of transport issues and problems in Dhaka has had a singular focus on the supposed contribution of cycle rickshaws to traffic congestion, and the need to facilitate movement of automobiles. In line with this analysis of the transport situation, various projects have been undertaken, focusing on banning rickshaws and rickshaw vans from major roads, and sometimes relegating them to narrow rickshaw lanes. The problem of car parking has been addressed mainly through insistence on provision of separate parking places by offices, shops and restaurants even by enacting law under the building code. It is a matter of deep regret that not a single transport policy decision was undertaken after conducting a proper scientific or knowledge-based analysis of the transport problems of the city. It has become a standard norm to take important policy decisions rather arbitrarily, whether it is rickshaw ban or Strategic Transport Plan (STP) for the city.
The results of these various initiatives have been made clear through government-mandated studies, including the HDRC report on the rickshaw ban on Mirpur Road (HDRC 2004), and the DUTP after-study report (DUTP 2006). The results, almost astonishingly negative, would suggest that the basis for the policy decisions and transport plans are flawed. This would be less than surprising when considering the fact that important transport policy decisions were taken without employing any knowledge-based approach or scientific study.
Moreover, despite the strong evidence of increased travel costs and traffic congestion, transport planning continues to focus on expanding the role of the automobile and reducing that of fuel-free transport. That pattern has been reflected by the further extension of the rickshaw bans on more city roads. In this connection, readers are requested to draw their attention to the following news item:
gTraffic Division of the Dhaka Metropolitan Police made Purana Paltan-Bijoynagar Road off-limits to rickshaws from Thursday. The decision was taken at a meeting on Wednesday. All the deputy commissioners of four traffic divisions were present at the meeting. M Sayedur Rahman, deputy commissioner (south) of traffic division, told New Age on Thursday that the authorities banned plying of non-motorised vehicles on the stretch between Purana Paltan and Bijoynagar to ease traffic congestion.h The New Age, Dhaka, Friday, October 19, 2007.
30178-100~100.jpgThis arbitrary decision making process as depicted in the news item draws attention to a number of disturbing questions as follows: Do the police have the authority to ban or restrict rickshaw movements?
If yes, from whom do they get that authority?
Do the police have similar authority to limit the movement of motorised vehicles when there is not sufficient road capacity for them, e.g. narrow lanes, which cannot accommodate cars without causing traffic jams?
Probably not, it is therefore clear that such misguided policy actions are being pursued just to give absolute priority in the transport system of the city for a tiny minority of car owners, i.e. the so called elite section of the society.
Do the police have requisite training to make proper transport decisions?
If so, why dies Dhaka needs organisation like DTCB, when the police can do the job better?
The rickshaw bans are being extended beyond Mirpur Road, but it seems unlikely that those bans were carried out by the police, rather than by a section of the powerful bureaucrats behind the scene. It may be mentioned here that after failure of the rickshaw ban in the demonstration project of the Mirpur Road, the World Bank has set the standard of extending further bans on the condition that: gAny future support from the World Bank would be possible only if it can be demonstrated that aggregate positive impacts of NMT-free conversion on transport users and transport providers outweigh the aggregate negative impacth.
images-10.jpeg
It is matter of deep regret that policies continue to give car owners absolute priority, while ignoring the fundamental principle of any transport project appraisal, that is, that net user benefits of any transport intervention must exceed net loss.
Now, it may be appropriate to concentrate on, possibly, the most important argument in the news item, that is, gthe authorities banned plying of non-motorised vehicles on the stretch between Purana Paltan and Bijoynagar to ease traffic congestion.h In the following paragraphs answer to this question and other related aspects of such transport policy interventions, will be analysed in the light of knowledge-based and participatory decision-making approach.
Did the previous rickshaw ban in Dhaka City ease traffic congestion?
The answer lies in the gAfter Projecth report of the government mandated study of the Mirpur Road Demonstration project (DUTP 2006), where fuel free transport was banned.
It might be appropriate to look into the issue considering a number of key congestion indices with respect to before and after scenarios of the Mirpur Road Demonstration project as follows:
Average journey time per vehicle
Average journey time per person
Journey reliability
Throughput (total number of vehicles per time interval that pass a point on the carriageway)
Average Journey time per Vehicle
images-3.jpegThe Table 1 shows the comparison of travel times of fuel dependent (motorised) vehicles between 2000 and 2005. Considering large variability of the travel time data, it is evident that there is no statistically significant difference of travel times of fuel dependent or motorised vehicles between pre and post rickshaw ban scenarios. This means that no travel time gain for fuel dependent vehicle was achieved due to rickshaw ban.
The Table 2 demonstrates the comparison of travel times of buses between 2000 and 2005. Although there is no statistically significant difference of travel times for fuel dependent vehicles between pre and post FFT ban scenarios, the travel times for buses did undergo significant deterioration with a 26.1% increase of travel times. This means that bus congestion has increased significantly due to imposition of rickshaw ban in the Mirpur Road demonstration corridor.
On balance average vehicle congestion in terms of journey time per vehicle has increased significantly due to the rickshaw ban.
Average journey time per person : Bus travel has worsened following the FFT ban, with a 26.1% increase in travel time; passenger travels by bus has become slower than by rickshaw. Thus all the bus passengers (28.1% of total passengers)-both those who continue to travel by bus in pre- and post-project scenarios, and those who were forced to shift from rickshaws-have experienced significant increase in travel times.
Impacts of the project on car passengers who have been riding a car both pre- and post-project are more or less neutral, as there is no significant difference in travel time.
The passengers of motorised para-transit who continue to travel both in pre- and post-project scenarios are likely to suffer increase in average journey times. While there is no significant difference in travel times between scenarios, the times required to find a driver who would be willing to go for short trips have gone up substantially as per HDRC report (HDRC 2004) thereby increasing average travel times per person.
images-7.jpegDespite being subjected to a ban on Mirpur Road, rickshaws remain the most popular means of transport in the corridor, accounting for 30% of all trips. Rickshaw passengers have become net losers, being forced to take long detours using congested side roads, and thereby substantially increase their travel time.
These evidences from the after project studies prove that congestion in terms of average journey time per person have increased significantly after rickshaw ban in the Mirpur Road demonstration corridor.
Journey Reliability: Both DUTP after project study (DUTP 2006) and HDRC studies reported significant deterioration of waiting times for bus passengers. Again, as reported in the HDRC report, baby taxi operators are reluctant to take short trips, causing significant increases in waiting times for passengers. Similarly, finding suitable taxicabs at an affordable cost has become increasingly troublesome and time-consuming for short trips.
It is therefore clearly evident that journey reliability of the Mirpur Road demonstration project deteriorated significantly due to imposition of rickshaw ban. This in turn represents increase of congestion.
Throughput (total number of vehicles per time interval that pass a point on the carriageway)
Although it might not be appropriate to compare throughputs between a FFT free road and a mixed vehicles road, it is obvious from the Table 3 that number of vehicles that pass at North of Dhanmodi R#2 of Mirpur Road, decreased significantly both in terms of absolute number of vehicles and passenger car equivalents due to rickshaw ban. This indicates the congestion in terms of throughput has increased significantly due to rickshaw ban in Mirpur Road.
rickshaws-53189087-tn.jpgAgain, although passenger carrying capacities of the whole network under investigation were found to increase on average by 30% due to a significant increase of bus services under a private sector-driven initiative, increase in passenger capacity for the demonstration project was only 15%. Again, a careful analysis of data reveals that nearly total elimination of FFT combined with a very high increase in bus service resulted in only a 15% increase in passenger capacity, whereas a small decrease in cars combined with only a modest increase in bus service resulted in a 27% increase in passenger capacity in a VIP road, which has been under FDT-only operation in the base case, indicating that as far as road capacity is concerned the problem is cars, not rickshaws.
Whether car more efficient than rickshaws in terms of road space occupancy?
Despite constant claims of the city officials that rickshaws are the main source of traffic jams, data indicate that rickshaws are far superior to cars as far as road space occupancy is concerned (see Table 4). In the base case i.e. before fuel free transport ban, rickshaws made up 69.8% of vehicles, yet utilised only 43.5% of road space to transport 59.4% of passengers (all trips). Cars made up only 6.4% of vehicles, yet occupied as much as 29.9% of the road space in the base case to transport far fewer passengers (5.5%) than by rickshaw.
Despite being removed from the main roads, rickshaws are still the most popular mode of transport, serving 30% of the passengers, whereas cars serve only 8.5% of all trips (11% of vehicular trips) while requiring the greatest share of road space (54.2%). Although the modal share of cars in overall has gone up only 3.0%, they now claim about 25% more road space than prior to FFT ban. If one considers the additional parking space required for them, total road space required would be much higher. It is clear that a combination of fuel-free transit and public transit would be far superior to a fuel-dependent transport and public transit option.
It may be mentioned here that despite 50% traffic growth of motorised vehicles during 2000 to 2005 period, the traffic in terms of PCE (passenger car equivalent) in Mirpur Road Demonstration corridor was lower in 2005 in comparison to that of 2000. However, despite having less number of traffic in 2005, the performance of the corridor was significantly worse under FFT free condition after the ban.
images-8.jpegIt is therefore clearly evident from the data analysis of the DUTP after project study that congestion in terms of all major congestion indices has increased significantly due to imposition of fuel free transport ban in the Mirpur Road demonstration corridor.


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