No abstract

Indiana's present weight limits for trucks arc 18,000 Jbs. on a single axle, 32,000 lbs. on a tandem axle and 73,280 lbs. gross vehicle weight. Many states have increased their weight limits to 20,000 lbs. on a single axle, 34,000 lbs. on a tandem axle and with gross limits of 80,000 lbs. This study was conducted to determine possible economic impacts on maintenance of Indiana highways and bridges if weight limits were to be increased in Indiana. Extensive use was made in this research of work reported by other investigators. The road life records of the Indiana State Highway Commission were searched and pavement sections were evaluated using these data coupled with truck weight information from the weight stations, soil information and performance data on file in the JHRP offices.

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No abstract

Willingness-to-pay measures were estimated for users of the PR-22 Freeway in the Commonwealth of Puerto Rico. The first dynamic toll lane (DTL) facility in Puerto Rico started operations in 2013 on PR-22. The PR-22 segment examined consists of two reversible express lanes along the median with a dynamic pricing scheme and six general traffic lanes with a fixed toll rate. Willingness-to-pay for the DTL was assessed using the Van Westendorp Price Sensitivity Meter (VWPSM) analysis. Moreover, discrete choice analysis was used to estimate the users’ willingness to pay for travel time savings. The data used in this analysis was obtained through an online survey that presented participants with direct willingness-to-pay questions, toll lane choice scenarios, and, for declared DTL users, questions about their reasons for using the facility. The aggregate analysis of the VWPSM estimated a willingness-to-pay range for the DTL of $1.00 to $2.79, which is lower than the maximum toll rate of $4.95 charged for the managed lane facility. The stated preference scenarios provided a value of time (VOT) estimate of $21.47 per hour. The VOT value is higher than the estimate for local personal travel of $10.00 per hour. There is evidence in support of inflated VOT values for high-occupancy toll lanes and variable toll facilities. Another reasoning could be that PR-22 users overestimated their time savings. Still, the estimated VOT for the PR-22 DTL is relatively low in comparison with other managed lane facilities in the United States.