Evaluation of Truck Operating Characteristics on a Rural Interstate Freeway with Median Lane Truck Restriction

Mugarula, Naziru; Mussa, Renatus

doi:10.3141/1856-06

Cited by 10 publications

(9 citation statements)

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“…For example, it was alleged that INGOs promoted homosexuality. 105 By defending LGBTQ rights and female reproductive rights, donors and INGOs reinforced these associations. 106 However, the centre-piece of this self-portrayed restoration was the revival of a project of national transformation.…”

Section: Dan Paget Democratizationmentioning

confidence: 99%

Again, making Tanzania great: Magufuli’s restorationist developmental nationalism

Paget

2020

Democratization

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This article is about how ideologies legitimize authoritarianism. The literature argues that liberation nationalists discursively construct "liberation" as an ongoing struggle and justify their authoritarian rule until its completion. By recurrently postponing liberation, they extend this justification of authoritarianism. Nonetheless, their claim that the nation is part-way through liberation becomes less plausible over time. Liberation nationalism shares a discursive structure with a parallel class of developmental nationalisms. I analyze the ideology of President Magufuli and CCM in Tanzania. Instead of claiming that the nation is mid-transformation, they constructed the status quo as a corrupt deviation from a past order: "Nyerere's Tanzania". They conceived of this past order as a nation dedicated to industrial development which would lead to a transformed future. They advocated rupture with the present, the restoration of the past and the resumption of this transformative journey. Restorationism relieves liberation and developmental nationalisms of the rising rhetorical challenge of claiming that the nation has been on a transformative path since liberation. Therefore, Magufuli and CCM developed a variant upon liberation and developmental nationalisms, which also justifies authoritarianism. Unlike them, it remains rhetorically viable as the moment of liberation or development becomes distant. I call it restorationist developmental nationalism.

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Section: Dan Paget Democratizationmentioning

confidence: 99%

Again, making Tanzania great: Magufuli’s restorationist developmental nationalism

Paget

2020

Democratization

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“…They concluded that separating truck traffic from passenger cars for freeway facilities improves safety. Several other researchers have also stated the safety benefits of restriction of truck lane use (11)(12)(13)(14)(15).…”

Section: Crash Analysis and Traffic Characteristicsmentioning

confidence: 99%

“…Over the past decade, transportation researchers evaluated the effectiveness of truck lane restriction and differential speed limit strategies. While several studies evaluated the performance of such restrictions in terms of traffic operation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11), others focused on the safety impact of the restriction policies. The impacts of these regulatory practices on variables such as crash rate, lane distribution, average speed, density, and frequency of lane-changing maneuvers have been explored with statistical techniques such as empirical Bayes technique or with simulation models.…”

Section: Introductionmentioning

confidence: 99%

Freeway Truck Lane Restriction and Differential Speed Limits

Korkut

Ishak

Wolshon

2010

Transportation Research Record: Journal of the Transportation R

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Over the past decade, several fatal truck-related crashes have occurred on the elevated freeway over the Atchafalaya Basin segment of Interstate 10 in southern Louisiana. In an attempt to reduce the crash rates, the Louisiana Department of Transportation and Development has implemented two policies to regulate the truck traffic on this rural section of freeway. These policies restrict truck traffic to the right lane and reduce the maximum truck speed limit to 55 mph while maintaining passenger car speed limits at 60 mph. To investigate potential relationships between compliance with these policies and crash rates, traffic and crash data were collected for the segment while the policies were in force. Relationships between hourly observations of crash rates and compliance rates were sought at the .05 significance level with multiple linear regression. The traffic characteristics that might affect such a relationship were also incorporated into the regression models. These characteristics included difference between truck and car speeds, speed variance, truck volume, and lane occupancy. The regression models were performed with SAS software. Confidence intervals on the means of the explanatory variables were constructed to understand the variability in the values of the traffic characteristics over different days of the data collection period. The results showed that violation of the lane restriction and truck speed limits, truck speed variance, differences between car and truck mean speeds, and lane occupancy were positively correlated with crash rates. The findings suggested that prohibiting trucks from traveling in the left lane and setting a truck speed limit of 55 mph and a car speed limit of 60 mph on a four-lane elevated rural freeway can offer traffic safety benefits.

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“…HOV lane restrictions only are found on some sections of I-95 and I-4. A review of operations on Florida's urban limited-access highways indicated that truck lane restrictions are currently in force 24 hours a day, but HOV lane restriction is relaxed during off-peak hours.The most common safety and operational benefits cited by many state agencies following the implementation of truck lane restrictions include reduced crashes, improved highway speeds, and improved safety in construction zones (2,(5)(6)(7). Furthermore, studies show that there are some psychological benefits of restricting trucks to certain lanes because passenger car drivers do feel intimidated and squeezed in when trucks are allowed to use all through lanes.…”

mentioning

confidence: 99%

“…The most common safety and operational benefits cited by many state agencies following the implementation of truck lane restrictions include reduced crashes, improved highway speeds, and improved safety in construction zones (2,(5)(6)(7). Furthermore, studies show that there are some psychological benefits of restricting trucks to certain lanes because passenger car drivers do feel intimidated and squeezed in when trucks are allowed to use all through lanes.…”

mentioning

confidence: 99%

Simulation Analysis of Truck-Restricted and High-Occupancy Vehicle Lanes

Siuhi

Mussa

2007

Transportation Research Record: Journal of the Transportation R

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Numerous studies have reported the efficacy of high-occupancy vehicle (HOV) lane restriction and truck lane restriction implemented independently, but the simultaneous use of both restrictions on an urban freeway corridor raises numerous operational and safety issues. This research study analyzed the operational and safety experience of an 83-mi corridor of I-95 in South Florida that has both HOV and truck lane restriction. Results of a field-validated VisSim simulation model showed that high-occupancy vehicles and automobiles gained significantly more travel time savings and speeds on the restricted lanes than on the general lanes. Also, vehicle queue lengths around critical merging and diverging areas increased significantly as the percentage of trucks increased. Results indicated that during peak traffic conditions right lanes had higher lane occupancy than left lanes, whereas during off-peak traffic conditions center lanes carried more vehicles per lane than the outermost lanes; these results suggest that congestion on right lanes forces automobiles to use left lanes. Furthermore, results showed that most lane changes occurred during peak traffic flow conditions—about twice that of off peak—and appreciable speed differences existed between restricted and nonrestricted lanes. Simulation results for off-peak traffic conditions did not show any noticeable changes in traffic operating characteristics resulting from lane restriction strategies. On the basis of these results, it can be fairly concluded that on urban freeways significant operational and safety benefits of the combined implementation of HOV and truck lane restrictions accrue during congested traffic conditions rather than during uncongested conditions.

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Evaluation of Truck Operating Characteristics on a Rural Interstate Freeway with Median Lane Truck Restriction

Cited by 10 publications

References 0 publications

Again, making Tanzania great: Magufuli’s restorationist developmental nationalism

Again, making Tanzania great: Magufuli’s restorationist developmental nationalism

Freeway Truck Lane Restriction and Differential Speed Limits

Simulation Analysis of Truck-Restricted and High-Occupancy Vehicle Lanes

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