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Tag: driving you crazy

  • A new quadrant road coming to Littleton that will eliminate left turns at S. Santa Fe Drive and Mineral Ave.

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    LITTLETON, Colo. — Have you ever heard of a Quadrant Road? To put it simply, a quadrant road — or quad road for short — eliminates left turns at the main intersection. In this case, the City of Littleton just broke ground on the first quad road in the western United States at the very busy intersection of S. Santa Fe Drive and Mineral Avenue.

    City of Littleton

    With no left turns, the theory is that traffic flows better as there is more green-light time for through movements. With as many as 60,000 vehicles per day on Santa Fe and 30,000 on Mineral, drivers can experience delays of about 20 minutes during peak times. If the intersection were to remain in the current configuration, delays would become significantly worse given traffic volumes are projected to grow to 115,000 vehicles per day through the intersection by 2040 due to anticipated future development in the region. 

    Quad road time savings 1.png

    City of Littleton

    Engineers said during evening rush hour, the commute time regularly takes well over 10 minutes just to go from Church to Mineral Avenues. When the quad road opens, city engineers believe that same trip should take less than five minutes and the length of the traffic backup at Mineral should decrease by more than 90%.

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    City of Littleton

    Although the quadrant roadway concept is new to Denver, the method has been used in other states with good results. Originally a grade-separated overpass interchange was envisioned here but city leaders decided the quadrant road idea would be a less expensive and better long-term solution.

    The project includes new traffic signals, lane configurations and timing adjustments, along with other mobility and safety upgrades in the surrounding area — elements the city believes will make life easier for pedestrians, bicyclists and transit users. There will also be hundreds of new residents and many new businesses who will call this area home in the coming years as the adjacent River Park development gets built.

    Work on the quadrant roadway has just started, with completion expected in the fall of 2027. The total cost of the project is $21.4 million, with $18.6 million covered by federal grants and contributions from developers, plus a local match from City of Littleton funds of $2.8 million.

    A very busy Littleton intersection is about to lose all left turns

    I did a very interesting, in-depth interview on my Driving You Crazy podcast about the quad road and how it works with Aaron Heumann, Transportation Engineering Manager for Littleton Public Works. You can listen here..

    Denver7 Traffic Expert Jayson Luber says he has been covering Denver-metro traffic since Ben-Hur was driving a chariot. (We believe the actual number is over 25 years.) He’s obsessed with letting viewers know what’s happening on their drive and the best way to avoid the problems that spring up. Follow him on Facebook, Twitter or Instagram or listen to his award winning Driving You Crazy podcast on any podcast app including iTunes, iHeartRadio, Spotify, Podbean, or YouTube.

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    Denver7 | Your Voice: Get in touch with Jayson Luber

    Denver7 traffic expert Jayson Luber knows Colorado roads like the back of his hand – but he’s always looking for stories impacting transportation in our state for his Driving You Crazy podcast and beyond. If you’d like to get in touch with Jayson, fill out the form below to send him an email.

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    Jayson Luber

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  • Aviation security analytics specialist projects future of TSA on Driving You Crazy podcast

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    DENVER — Imagine being able to walk into an airport, pass right through security without even stopping and getting to your gate minutes later.

    “If we know who you claim to be and we know you are not a threat, then why even physically screen you?” Dr. Sheldon Jacobson, professor of computer science at the University of Illinois said on the Driving You Crazy Podcast. “Facial recognition and biometrics in general is truly the game changer when it comes to airport security. There will some subset of travelers with appropriate vetting that may not require any physical screening in the future.”

    Dr. Jacobson specializes in aviation security analytics and applied operations research. He said the future of airport security that he envisions would be dependent on travelers embracing biometrics and facial recognition combined with artificial intelligence.

    “We could get to the point so that for many passengers who are benign and who are being grossly overscreened right now, the TSA would rightly screen them which means no screening at all,” Dr. Jacobson said.

    Could TSA do away with traditional screenings?

    He has been working on airport security well before the terror attacks of Sept., 11, 2001. His research on aviation passenger screening at airports was the foundational design of the TSA PreCheck program. The TSA uses PreCheck to identify low-risk, pre-approved travelers who will then use expedited security screening lanes at U.S. airports. The vetting allows passengers to leave their shoes, belts and light jackets on, and keep laptops and liquids in their bags during screening. Travelers fill out an application form, attend an in-person appointment for fingerprints and an ID check, and receive a Known Traveler Number to add to your airline reservations for each trip. The service costs $85 that lasts for five years.

    However, Dr Jacobson believes this program should be free for all travelers, saying the government saves money when a PreCheck passenger goes through an airport security checkpoint.

    Aviation security analytics specialist projects future of TSA for Denver7

    “There’s been estimates that it saves around $100 million per year, and I think that is a very conservative estimate. We did the analysis and found that if they give it away for free for anybody who flies at least six one-way segments per year, it saves money. I’m a firm believer of that,” Dr. Jacobson said.

    During Dr Jacobson’s conversation on the Driving You Crazy podcast, he further discusses that while the TSA isn’t perfect, it is way better than the alternative. He believes TSA has been too reactionary with the ban on liquids and taking off of shoes. The entire interview can be found on any podcast app including, iTunes, iHeartRadio, Spotify, Podbean, or YouTube.

    WHAT’S DRIVING YOU CRAZY? DENVER7’S JAYSON LUBER ANSWERS YOUR QUESTIONS.

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    Jayson Luber

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  • Driving You Crazy: Is there any enforcement of the HOV lane that runs on Santa Fe?

    Driving You Crazy: Is there any enforcement of the HOV lane that runs on Santa Fe?

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    Joe from Littleton writes, “What’s driving you crazy? Is there any enforcement of the HOV lane that runs on Santa Fe from Mississippi to Bowles? Are there any planned changes to make it not HOV, or expand it to HOV full time as it seems enforcement during specific times is impractical and non-existent?”

    There are two separate and distinct issues here Joe, enforcement and improvement. Let’s start with enforcement. The issue with enforcement along South Santa Fe is that it is patrolled by four different cities: Denver, Englewood, Sheridan and Littleton.

    The Santa Fe High Occupancy Vehicle lanes were the first to be tried in metro Denver. They were completed in the late 90’s with the HOV restriction set only for specific commute times. In the morning, the HOV is in effect for northbound traffic between 6 AM and 8:30 AM. The restriction for southbound traffic is only in effect in the afternoon between 4 PM and 6:30 PM. Outside of those times, anyone can use the lane. CDOT says that buses, carpools, motorcycles, and all vehicles making left turns are permitted to use the HOV lane during the restricted hours.

    Denver has the northern portion of Santa Fe. The HOV starts for southbound traffic just before Mississippi near the McDonalds. Northbound it ends north of Mississippi at the split for northbound I-25. DPD is in charge of enforcement from there to where Yale would cross Santa Fe, just before the Shell station north of Dartmouth. Sean Towel with Denver Police tells me, “It is difficult to monitor the occupancy in the HOV lane given its location on the far left side of the road. However, the priority for the department is enforcing traffic violations that directly impact safety on the street, such as speeding and reckless driving.”

    You will see even less to nearly zero enforcement of HOV violations in Denver now that Denver Police announced a shift in policy away from low-level traffic stops to prioritize ‘bigger threats to public safety’. Enforcing the HOV lane is not, in the view of Denver Police, a threat to public safety.

    MORE: Read more traffic issues driving people crazy

    The city of Englewood has jurisdiction over two sections of Santa Fe. The first starts just north of Dartmouth, from the Denver line to Hampden Ave (US 285). They also oversee the section of Santa Fe between Quincy and Santa Fe Circle or just south of Union Ave. Matthew Thuente, Investigator with the Englewood Police Department tells me they very rarely monitor the HOV lane for single occupancy vehicle violations due to limited resources, officer safety, and the size of their enforcement area.

    “These challenges complicate enforcement, including the high volume of traffic, the danger posed by road debris to officers on motorcycles, and the difficulty in safely stopping violators as drivers often do not pull over to the right. Additionally, the HOV lane sections are divided between jurisdictions, including Littleton and Sheridan, which makes it hard for officers to set up and survey the lane effectively.”

    Investigator Thuente tells me even with the enforcement challenges and that HOV lane enforcement is not a top priority for their officers, they have written a handful of tickets to violators. Englewood police say their primary focus is on safety related issues, high accident locations, and violations that directly lead to accidents.

    The short, 8 block section of Santa Fe between Hampden Ave (US 285) and Quincy is in the city of Sheridan. Police Chief Jeffrey A. Martinez tells me their officers are aware of the problems that HOV violators cause but face operational challenges with enforcement.

    “On occasion, the Sergeants set up traffic enforcement operations on Santa Fe but there are very few safe places for officers to conduct stationary traffic, therefore the enforcement of HOV lanes is very difficult. Our officers will drive this area looking to enforce this traffic concern, but they must maintain relative speeds to the others on the road and within a minute or two they are out of the Sheridan jurisdiction. This small area in Sheridan makes this an extremely difficult area to enforce the HOV violation.”

    Similar to Denver Police, Chief Martinez tells me looking for violators in the HOV lane is a low priority for them. He says his department must prioritize officers’ ability to be effective in serving the public, and although he says enforcement of the HOV lane is important, their efforts typically yield nominal returns. “It is quite dangerous for our officers to set up in the 8-block area. The hours that the HOV laws are in effect are during the “rush hours”, and SPD usually avoids static enforcement during these hours, so we don’t contribute to the traffic problems that visible enforcement causes to the interruption of traffic.”

    The southern section of HOV lanes ends in Littleton, just before Bowles Ave. I spoke with Sheera Poelman, Public Information Officer with the Littleton Police Department. She tells me while they will not hesitate to enforce the law when an officer witnesses a violation, most of the city officers are patrolling more sensitive areas of the city and not the HOV lanes. “The City of Littleton recently embarked on a ‘Safer Streets Littleton’ effort with the sole focus of improving pedestrian and bicyclist safety through an accelerated pace of infrastructure upgrades, increased traffic enforcement, and public education. Therefore, we have dedicated our directed traffic enforcement patrols to school zones and intersections that will have the most impact and keep our most vulnerable as safe as possible.”

    Sheera tells me the city is hiring officers and when fully staffed they will be able to increase patrols across the city. She tells me one of the issues with enforcement along Santa Fe is, like the city of Sheridan, only a small portion, a bit over 1 mile of the HOV lane is in Littleton and it has always been challenging finding a safe place to position the officers to watch for HOV violations. Since 2021, LPD has written only 3 HOV citations, none from this year.

    By the way, if a single driver was caught using the HOV lane when it is in effect, Denver Police say a citation would be 0 points and a $135.00 fine.

    As to your second question Joe, currently to use the HOV lane along South Santa Fe, all you need is one additional person in the vehicle along with the driver. All other HOV lanes in Metro Denver require at least 3 people to be in the vehicle. CDOT says one strategy to improve the use of this specific HOV lane would be to modify the types of vehicles that would be allowed to use it as well as change the occupancy requirements. CDOT says this strategy has been used nationally to address HOV lane utilization, especially when upgrading HOV lanes to high occupancy toll (HOT) lanes. HOT lanes allow a single driver to use the lane for a toll, thus increasing the utilization of the lane. It also has the effect of decreasing travel times for paying customers and removing vehicles from the more congested free lanes.

    It wasn’t long after the HOV lane was operational that there were efforts to turn it back to a general purpose lane. In a federal Air Quality Implementation Plan document from May, 2001, it stated, “We also note that in his November 30, 2000, letter, the Governor (Romer) asked that we parallel process a potential alternative provision for the maintenance plan that had been proposed by the Colorado Department of Transportation (CDOT). CDOT’s alternative provision involved the conversion of the Santa Fe Boulevard High Occupancy Vehicle (HOV) lanes to general service lanes and the provision of funds to provide additional light rail transit cars to compensate for the loss of the HOV emission reductions. However, in a December 6, 2000, letter (that we received on December 19, 2000) from CDOT to the Air Quality Control Commission (AQCC), CDOT withdrew its request for this alternative provision indicating that it could not guarantee light rail transit cars to replace the HOV lanes.”

    The Santa Fe HOV lanes have remained unchanged since then, but there are new ideas on the horizon that can be found in CDOT’s 2022 Planning and Environmental Linkages Study. In that document, there is acknowledgment that the existing HOV lanes on Santa Fe are underutilized and that a high number of users of the lanes during peak hours are single occupancy violators. CDOT also cites design challenges with keeping violators out of the lane. “The existing HOV express lane creates operational issues with weaving maneuvers and lane changes due to the need for left turning traffic to utilize the lane, and the need for HOV express lane traffic to stop at the signalized intersections.”

    There is widespread agreement by municipalities along the South Santa Fe corridor that this HOV lane could be utilized better than it is right now. CDOT says the operation of the HOV lane was identified by the public and corridor stakeholders as a critical issue for overall performance and safety. In CDOT’s 2021 HOV Lane Evaluation White Paper, they outlined several ideas as to what could be the best solution to the current HOV lane situation. Those suggested alternatives include:

    1. Maintaining the HOV lane with design/operational adjustments to improve operations and safety. Lowest cost while still improving operations and safety; no ability to dynamically manage demand.

    2. Conversion of existing HOV lane to a general purpose lane. Removes the need for enforcement and provides improved traffic operations and safety; requires legislation; no ability to dynamically manage demand.

    3. Relocation of the HOV lane from the left lane to the right lane. Reduces left turn weaving conflicts; improves ability to enforce HOV lane; no ability to dynamically manage demand.

    4. Enhanced at-grade managed lanes from C-470 to I-25. Ability to dynamically manage demand and collect toll revenue; paying users still experience delay at signalized intersections.

    5. Enhanced managed lanes from C-470 to I-25 including grade separation at major intersections. Ability to dynamically manage demand and collect toll revenue; costly with grade separations for HOT lane.

    CDOT says bus rapid transit (BRT) service that would utilize the existing HOV lane was not considered during the alternatives evaluation as it would be redundant to the adjacent RTD light rail service, however, a regional bus service could be considered during future planning efforts for the express lane.

    While no plan has been chosen as of yet, CDOT says they are continuing to work to prepare for when a plan of action is decided on. After that, money needs to be identified to complete any work so any changes to Santa Fe would be many, many years down the road.

    Denver7 Traffic Expert Jayson Luber says he has been covering Denver-metro traffic since Ben-Hur was driving a chariot. (We believe the actual number is over 25 years.) He’s obsessed with letting viewers know what’s happening on their drive and the best way to avoid the problems that spring up. Follow him on Facebook, Twitter or Instagram or listen to his award winning Driving You Crazy podcast on any podcast app including iTunes, iHeartRadio, Spotify, Podbean, or YouTube.

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    Jayson Luber

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  • Smoke from Arvada fire drifts across I-70 limiting visibility between Wadsworth Blvd. and Kipling St. Tuesday

    Smoke from Arvada fire drifts across I-70 limiting visibility between Wadsworth Blvd. and Kipling St. Tuesday

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    ARVADA, Colo. — Smoke from a building fire drifted across Interstate 70, limiting visibility between Wadsworth Boulevard and Kipling Street Tuesday morning.

    “It looks like a storage facility that is on fire with lots of smoke,” Denver7 Traffic Expert Jayson Luber said.

    The Arvada Fire Department was dispatched to the self storage facility next to Carr Street, west of Wadsworth, just after 6:15 a.m. Tuesday.

    The frontage road on the north side of I-70 closed due to the fire, according to Luber.

    More than 40 firefighters worked together to get the flames under control, including members of the Fairmount Fire Protection District and West Metro Fire Protection District.

    Smoke from Arvada fire drifts across I-70 limiting visibility for commuters


    The Follow Up

    What do you want Denver7 to follow up on? Is there a story, topic or issue you want us to revisit? Let us know with the contact form below.

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    Katie Parkins

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  • Driving You Crazy: What are these special traffic signals with bars instead of round lights?

    Driving You Crazy: What are these special traffic signals with bars instead of round lights?

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    Jill from Parker writes, “What’s driving you crazy? I’d like some direction for the traffic signals that relate to buses. There is one at 6th and Havana.  It is either a horizontal or vertical line and is for buses only. I have never seen anything like that. I have looked but don’t find any good, reliable information.”

    Those bus only signals, also known as queue jumps, have been in place for years at select intersections around metro Denver. The one I know best is on northbound Lincoln Street at 13th Ave. There is another on Lincoln St at 18th Ave. The specific queue jump signal you mentioned is for buses going northbound on Havana Street at 6th Avenue. It was installed by the City of Aurora in partnership with RTD in late 2022. A second queue jump signal was installed along northbound Havana Street at Colfax at the same time.

    These queue jumps are usually placed on a traffic signal where a bus stops before an intersection, also called a near side stop. The bus only signals allow the bus driver to get a head start at the light, mainly so they don’t have to compete with general traffic to get into the flow of traffic, especially on busy roads. The signals are also instrumental for bus drivers who need to merge across all lanes to make an upcoming left.

    MORE: Read more traffic issues driving people crazy

    The signal is usually a vertical bar that comes on for about 3 to 5 seconds before the green signal illuminates for all vehicles. The vertical bar acts basically as a green light for buses. The horizontal bar acts as a red light for buses, although I’m told by RTD that bus drivers can still merge into the through lane to proceed if they have the horizontal bar.

    The queue jump at Havana and 6th is especially useful for buses that need to merge into traffic because their lane is ending. The queue jump on Havana at Colfax is helpful as it allows bus drivers to bypass waiting traffic to more quickly serve the far side stop. Typically for far side stops, ones that are located after the signal, there is no need for a queue jump, however, RTD has a system along part of Colfax and along Havana from Parker Rd to Montview called Transit Signal Priority (TSP). TSP allows buses to electronically request a longer green signal, usually 5-10 seconds, or shorter red signal as they approach an intersection. It is designed to keep bus transit moving faster to reduce delays with a minimal impact to other vehicles. TSP is also active along US 36 in Westminster.

    Major roadways aren’t the only place where queue jump signals are used. They will be used at several signalized intersections in Boulder County along highway 119 between Boulder and Longmont. When a bus approaches one of these special intersections, it will pull into a dedicated bus-only lane. The bus will receive a special traffic signal that allows it to proceed while the general traffic remains stopped at the red light. Because buses have the special traffic signal, they can get a head start, jump ahead of the traffic, and merge back more safely into the general traffic lanes. Along the highway 119 corridor all queue bypass lanes will be on the left side of the intersections, closest to the center median between northbound and southbound highway 119.

    RTD tells me there are a few other major queue jump signals including one along westbound Colfax at Lipan and one along westbound 60th Ave at Dahlia in Commerce City. By the way, here is a link for a story I previously wrotedescribing the differences between near side and far side stops and why they are important.

    Denver7 Traffic Expert Jayson Luber says he has been covering Denver-metro traffic since Ben-Hur was driving a chariot. (We believe the actual number is over 25 years.) He’s obsessed with letting viewers know what’s happening on their drive and the best way to avoid the problems that spring up. Follow him on Facebook,Twitter or Instagram or listen to his Driving You Crazy podcast on any podcast app including iTunes, iHeartRadio, Spotify and Podbean.

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    Jayson Luber

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  • Driving You Crazy: Why is there such a deep dip on northbound I-225 at the Iliff bridge?

    Driving You Crazy: Why is there such a deep dip on northbound I-225 at the Iliff bridge?

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    Kelvin from Denver writes, “What’s driving you crazy? When driving on I-225 northbound going over Iliff Ave, the transition between the bridge and far side has a very abrupt “dip,” which is especially noticeable in the left lane.”

    I am all too familiar with that bump and when you hit it depending on your speed, it can feel like you are going to be launched into the Carrabba’s parking lot. The cause of that dip is created when the bridge was constructed.

    When a bridge is built, it is set on pilings that are set deep in the ground. The roadway that approaches the bridge isn’t laid down on such a sturdy base so there is a tendency for the soil right next to the bridge structure to settle. It is that settling that causes that dip to form just before or just after the bridge structure. One such spot is along northbound I-25 at University Blvd. Vehicles in the right lane take a substantial dip down due to the soils settling there more than the soils in the left lanes.

    MORE: Read more traffic issues driving people crazy

    Sometimes the problem can stem due to when the structure and approaches were constructed. As we all know in Colorado, temperatures fluctuate greatly from day to day and from night to day. Concrete cures slightly differently depending on the temperature so if the bridge was constructed over several seasons, the soils could have expanded and shifted leading to the creation of the dip.

    Another compounding factor is that the bridge beams are set with a slight rise and fall. This is to dissipate the tension caused by the weight of the material and traffic rolling over it. That design is not just stronger than a level flat design but helps with runoff and height clearance for tall trucks that run beneath it. When a dip forms before the bridge structure, that slight angle up for drivers can compound the feeling of rising up from that dip.

    The way to prevent this problem is to make sure the fill material is packed to the point where the dip does not form. One way to fix this problem after the dip forms is to remove the road surface, add more material, pack it down well and then resurface the roadway. All of that takes time and, more of an issue for CDOT, money.

    CDOT engineers tell me they are currently designing a bridge preventative maintenance project for the entire 225 corridor. That project will replace many of the bridge joints in this area which can themselves be bumpy. CDOT is also hoping to address some of the other safety issues that require surface treatment, like that major dip at 225 pending additional funding. That project is expected to begin in the summer of 2024.

    Denver7 Traffic Expert Jayson Luber says he has been covering Denver-metro traffic since Ben-Hur was driving a chariot. (We believe the actual number is over 25 years.) He’s obsessed with letting viewers know what’s happening on their drive and the best way to avoid the problems that spring up. Follow him on Facebook,Twitter or Instagram or listen to his Driving You Crazy podcast on any podcast app including iTunes, iHeartRadio, Spotify and Podbean.



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    Jayson Luber

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