Alerts
  • The Mobility Authority Walk Up Centers and Call Center will close early at 5:00pm Tuesday, December 9, for company training. We will resume regular hours on Wednesday, December 10. Payments can still be made online at PayMobilityBill.com or via our automated phone system at 512-410-0562.
  • Our newest Customer Service Walk-up location will be opening Monday, September 29. It will be located at 1321 Rutherford Ln, Suite 120, Austin, TX 78753.
  • We are aware of the smishing/phishing scams regarding outstanding toll charges. The Mobility Authority will never ask for personal information via text/email. Please do not click on links or respond to any suspicious messages that aren’t from any of the listed numbers. The Mobility Authority works diligently to protect our customers’ data.

    You can get the most up-to-date information about your Mobility Authority account at PayMobilityBill.com or call us at 833-762-8655 and request a callback.

MoPac Express Lane

An 11-mile variably-priced tolled express lane along MoPac between Cesar Chavez Street and Parmer Lane

Those wanting to bypass traffic congestion have a choice to use the MoPac Express Lane. Drivers who prefer not to pay a toll can use the non-tolled lanes on MoPac.

About the MoPac Express Lane

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Map highlighting the MoPac Express Lane
The MoPac Express Lane gives drivers the option to bypass congestion on the 11-mile stretch of MoPac between Parmer Lane and Cesar Chavez Street and get to their destination without delay. MoPac is one of Austin’s most important arteries, serving as a key route to downtown and points beyond. As a primary alternative to Interstate 35, MoPac carries more than 180,000 cars and trucks each day. By 2035, MoPac is projected to serve more than 220,000 cars a day. In October 2017, the project fully opened to traffic.
Express lanes are special buffer-separated lanes that use variable tolls to keep traffic moving even when the adjacent lanes are congested. This is accomplished by raising the toll when traffic is heavy and lowering the toll when traffic is light. The lanes provide a non-tolled, congestion-free route for public transit buses and registered vanpools, but also allow individual drivers to pay to use the lane capacity that remains. The Express Lane is located in the middle of the MoPac corridor, separated from the existing lanes by a four- to five-foot-wide striped buffer zone with flexible plastic sticks called delineators. Drivers are able to access the MoPac Express Lane at Cesar Chavez Street, at Far West Boulevard and Anderson Lane, or at Parmer Lane.

Drivers should not attempt to cross the delineators, as they will cause vehicle damage. Trucks and trailers are prohibited from the Express Lane.

Learn more information about the project’s bicycle and pedestrian facilities.

Additional Information

MoPac Express Lane Fact Sheet

The History of MoPac

Express Lane FAQs

Express lanes are being used successfully in many other parts of the country, including here in Texas. Read about various case by clicking on the links below to learn about other Express Lane projects that have been implemented around the United States.

Because express lanes have been effective in other states. A good example is Minnesota. According to the Minnesota Department of Transportation:

  • Minnesota’s MnPASS Express Lanes can move twice as many people as a single general-purpose lane during peak times.
  • Average speeds in the express lanes are between 55 and 60 MPH during peak periods.
  • Average speeds in the general purpose lanes are 15 to 20 MPH during peak periods.
  • Customer satisfaction is greater than 80 percent. Commuters value time savings, congestion avoidance, choice and reliability.
  • Transit operators and users strongly support express lanes, as do car/vanpoolers.

For more information, click here.

Individual drivers looking to bypass congestion may use the Express Lanes. Drivers who prefer not to pay a toll will always have the option of using the non-tolled general-purpose lanes. In accordance with state law, any non-tolled capacity must be preserved. In other words, if you’re driving on it toll-free today, you’ll be able to drive on it toll-free tomorrow.

Until now, express buses and vanpools had to sit in traffic with all other vehicles on MoPac, but with the completion of the Express Lane, these transit vehicles are now able to bypass congestion and get to their destination reliably and on time. The express lane provides an opportunity for expanded Capital Metro Express Bus service and an incentive for greater participation in Capital Metro’s Ride Share vanpool program.

The objective is to maintain free-flowing traffic in the Express Lane (speeds greater than 45 MPH) at all times, so rates are adjusted to encourage or discourage users, based on current conditions. Rates are determined by the number of vehicles in the lane, the speed of the vehicles and the rate of change-of-traffic conditions.

To ensure the MoPac Express Lanes remain free-flowing, variable tolls are used to manage the number of vehicles entering the lanes at any given time. When traffic is heavy and demand for the Express Lanes is high, toll rates increase. When demand is low, toll rates go down. Changeable electronic signs display current rates in real time, so drivers know the price before deciding whether to enter the lanes.

Once you are in the lanes, the price you saw on the signs is the price you are guaranteed to pay. Drivers entering after you or at different locations may pay a different rate. Initial toll rates are $0.65 per segment and $1.30 for a full length trip, but can be higher if demand is greater than projected. Tolls paid by users are the source of money to repay the funds used to finance the project, including the sound walls and bicycle/pedestrian improvements.

Individual drivers are only able to enter or exit the MoPac Express Lane at designated locations in order to maximize safety and efficiency. However, emergency vehicles are able to drive over the flexible sticks and access the lanes to remove disabled vehicles anywhere along the 11-mile route. There are three entry and exit points. Electronic signs indicate the toll rate before each entry point.

  • North, near Parmer Lane
  • Central, between Far West Boulevard and RM 2222
  • South, at Cesar Chavez and 5th Streets

The MoPac Improvement Project is currently open to traffic and features one Express Lane in each direction on north MoPac from Cesar Chavez to Parmer Lane.

These special lanes are separated from the three existing non-tolled lanes by striping and white plastic sticks. They provide a reliable, non-stop, toll-free route for public transit buses, registered van pools and emergency vehicles. To help keep the express lanes from becoming congested, individual drivers pay a variable toll that increases when traffic is heavy and decreases when it is light. The primary goal is not to generate revenue, but to keep the express lane traffic free-flowing as much as possible.

Express Lanes are not intended for everyday use. They are designed to be there when you really need them. They will hopefully also encourage people to carpool because they have the option to split the cost of the trip among each occupant in the vehicle. Because their capacity will be limited, individual drivers will have to decide whether any particular trip is worth the toll being charged at the time they wish to use the express lane.

No. Express lanes benefit all lanes. Numerous studies show that people of all income levels use them, approve of them and agree they reduce congestion. Tolling provides travelers with a choice. Studies have shown that lower-income individuals face the greatest financial harm when they do not have access to options that can get them to their everyday destinations. Lack of choice can result in lost wages, late fees for day care or decisions that restrict a person’s quality of life that could have been avoided if they had the option to bypass congestion. To name a few studies:

  • According to the U.S. Department of Transportation, a wide range of income groups use the value priced lanes at different levels of frequency. Research from San Jose State University and the University of California, Berkeley shows that low-income drivers use express lanes and are equally as likely to approve of the lanes as high income drivers.
  • Studies of express lanes in California have shown that, at any given time, about one-quarter of the vehicles in toll lanes belong to high-income individuals. The remainder belong to low- and middle-income drivers.
  • Based on research conducted in California, certain pricing schemes do not necessarily disadvantage low-income drivers. Over half of commuters with household incomes under $25,000 a year approved of providing toll lanes.
  • A study of Atlanta’s I-85 express lanes conducted by the Southern Environmental Law Center concluded drivers of all income groups share similar opinions of express lanes, enroll in the tolling programs at comparable rates, and on occasion, use the lanes (A Better Inland Empire, 1).
  • According to the Georgia State Road and Tollway Authority, use of the I-85 express lanes is determined more by location than by income level. (A Better Inland Empire, 2). Click here for more.

Express lanes are special lanes separated from the non-tolled general-purpose lanes; often the boundaries are shown with striping and white plastic delineator sticks. Their purpose is to improve your commute experience by managing congestion. This is accomplished through variable toll pricing, which either encourages or discourages use by increasing the toll when traffic is heavy, and decreasing it when it is light. The idea is to have at least one lane that can “express” the driver to their destination, no matter the time of day.

The primary goal of express lanes is to keep the express lane traffic free-flowing for individual cars or even express transit. This ensures a reliable, non-stop route is available to drivers wishing to bypass congestion for the price of the toll. Public transit buses, registered vanpools and emergency vehicles travel these lanes toll-free.

Toll roads, unlike express lanes, are not just designed to manage congestion. Tolls are a way to pay for the road, while adding new capacity. What traditional toll roads and express lanes have in common is choice – drivers can choose to travel the express lanes for the posted toll price, or use the general-purpose lanes.

Use Your Electronic Tag or Drive on Through, We’ll Bill You

The MoPac Express Lane is completely automated with no need to stop or even slow down at toll booths. The choice is yours – utilize the all-electronic, or cashless, tolling method of payment through an electronic tag account; or if you don’t have an electronic tag just keep moving, and we’ll bill you through the Pay By Mail program.

In Texas, there are multiple transportation agencies that are authorized to operate toll roads, issue their own electronic tag, and do their own billing. In the Austin area, there are two: the Texas Department of Transportation (TxDOT) and the Central Texas Regional Mobility Authority (Mobility Authority).

Mobility Authority customers can pay their tolls with a TollTagEZ TAG, Fuego Tag, K-TAG, PikepassSunPass, E-470’s ExpressToll or Bancpass (the Mobility Authority also accepts TxTAG, which is now operated by HCTRA) and get a 33% discount, or they can choose to Pay By Mail. Pay By Mail customers are billed using a picture of their license plate, and are charged a $1.00 statement fee per bill. Vehicle registration information must be up to date in order for the bill to be sent to the correct address. Pay By Mail is available on all toll roads in Central Texas, although you may receive separate bills depending on which agency operates the road you traveled on.

To learn about paying your tolls, see the download available below.

Paying My Mobility Authority Toll

Traffic Incident & Management Center

The Traffic Incident & Management (TIM) Center is the heart of the Mobility Authority’s intelligent transportation system. The TIM Center affords us the ability to monitor our facilities as well as coordinate resources for incident management and maintenance, enabling efficient responses to accidents and other interruptions to traffic flow.

In the final configuration, 17 high-definition cameras line the MoPac corridor with vehicle detectors set about ½ mile apart. These devices monitor every stretch of MoPac Expressway between Cesar Chavez and Parmer Lane with technicians monitoring live video feeds out of the TIM Center. Operators and an algorithm monitor traffic levels in the Express Lane so that the variable-priced toll rates can be adjusted as needed to maximize the number of vehicles that can be carried in the Express Lanes at target speed of 45 mph for a reliable, free-flowing trip.
Staff working in the Traffic Incident & Management (TIM) Center

Electronic Message Boards Display Toll Price

The toll rate is posted on electronic message boards as drivers approach the Express Lane entrance. Drivers will pay what they see on the sign before entering the Express Lane, even if the price increases after they enter.
Electronic message board rendering

72 Hour Delay

To ensure accurate charges, the payment processing for MoPac toll transactions are delayed so that the trips can be billed accurately. Any necessary price adjustments are made during this 72-hour delay period to ensure that drivers are not overcharged when they receive their bill. In addition, cameras capture photos of the Express Lane pricing signs with time and date stamps at every transaction.

Interested in Adjacent Projects?

Learn about the proposed improvements to MoPac between Cesar Chavez Street and Slaughter Lane.

Images & Maps

Detailed MoPac Express Lane map

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