SacCity: VZ intersection 15: Grand Ave & Marysville Blvd

Note: General information on the Top 20 intersections, with criteria, list, and map, is available in post 1. Other posts on Top 20 intersections are available at Tag: Top 20 Intersections.

I am looking more closely at the Top 20 intersections identified in the City of Sacramento Vision Zero Action Plan Update. Intersection 15 is Grand Ave & Marysville Blvd.

Design

Lanes: Grand Avenue both west and east of Marysville Blvd is four lanes (one through, one left turn, one right turn, and one opposite). Marysville Blvd south of Grand Avenue is three lanes (one through, one left turn, and one opposite). Marysville Blvd north of Grand Avenue is five lanes (two through, one left turn, and two opposite). The corners on the north side of the intersection are a high radius, a known safety hazard. Lane total is 16.

Medians: Concrete medians are present on Marysville Blvd, but not on Grand Avenue.

Crosswalks: Crosswalks are present on all intersection legs, but it is unknown if they have been upgraded from the low-visibility parallel lines.

Bicycle Facilities: Marysville Blvd south of Grand Avenue has mostly separated bikeways, installed as part of the Marysville Vision Zero Safety Project. Marysville Blvd north of Grand Avenue does not have bike facilities. Grand Avenue west of Marysville Blvd has Class 2 bike lanes, though they become advisory at intersections, and do not have green paint or protection. Grand Avenue east of Marysville Blvd does not have bike facilities.

Speed: Grand Ave is posted 30 mph. Marysville Blvd is posted 35 mph.

The city no longer has a database or map of speed limits, though it has promised an updated database for many years now. I have used an old database, sometimes checked against Google Maps Street View for speed limit signs. The speed limits have not been field checked. The county (and SACOG) have a database, but it does not include the City of Sacramento roadways.

Transit: The intersection area is served by SacRT routes 15 Del Paso Heights and 86 Grand.

Crashes

In the 2015 to 2024 period (which is used in the Vision Zero Action Plan Update), there were four severe injuries at this intersection, two involving pedestrians and two involving motor vehicles. These are mapped below (pdf).

The orange dots are severe injuries (one contains three crashes); the red dots are fatal (none). Together, these are know as KSI = killed or severe injury. ‘Other visible injury’ and ‘complaint of pain’ crashes are not shown on my map, since these are not the focus of Vision Zero, however, there are a few of these along both roadways, which you may view in the Crash Dashboard Interactive Map.

Please note that the exact crash locations may not be accurate, as police reports often do not correctly locate crashes. Also note that ‘pedestrian violation’ entry may be false, as police often blame crashes on the person walking when actual responsibility is not clear, or the pedestrian is dead and can’t counter the driver story.

map of Grand Ave & Marysville Blvd
Grand Ave & Marysville Blvd, VZAP update Top 20

The crash details, available in the Vision Zero Crash Dashboard Interactive Map, are below.

SacATC April 18

The monthly meeting of the Sacramento Active Transportation Commission (SacATC) will be this Thursday, April 18, 2024, starting at 5:30 PM in the city council chambers. You can comment on these items, or on topics not on the agenda, ahead of time via eComment, or in person at the meeting. I encourage people to attend these commission meetings. There are usually very few members of the public in attendance, which means that your voice is important. Though eComments are valuable, in-person comments carry a lot more weight. The city’s planning staff is usually progressive and innovative, but Public Works in general is not, so it is important the citizens show up to push for progressive and innovative projects and policies. With some new appointments to the commission, and support of the public, the commission itself has been much more progressive than in past years.


The agenda includes three discussion items:

  1. Traffic Signal Safety Project
  2. Kastanis Way Shared Use Path
  3. Grand Avenue Sidewalk Infill

Kastanis Way Shared Use Path looks like a great project, connecting two dead-end streets for walkers and bicyclists, but not motor vehicles. These are the kinds of projects that should be implemented everywhere the opportunity exists.

diagram of Kastanis Way shared use path
Kastanis Way shared use path

Grand Avenue Sidewalk Infill also looks good, providing improvements to the crossing Grand Avenue by the Sacramento Northern multi-use path.

diagram of Grand Avenue Sidewalk Infill project
Grand Avenue Sidewalk Infill project

The Traffic Signal Safety project is questionable. There are nine locations:

  1. 16th Street at D Street (Traffic Signal)
  2. Franklin Boulevard at 36th Avenue (Traffic Signal)
  3. Freeport Boulevard at Kitchner Road (Traffic Signal)
  4. Fruitridge Road at 60th Street (Pedestrian Signal)
  5. Rio Linda Boulevard at Harris Avenue (Rectangular Rapid Flashing Beacon)
  6. Stockton Boulevard at 11th Avenue (Pedestrian Signal)
  7. 24th Street at 25th Street (Pedestrian Signal)
  8. Munroe Street at Latham Drive (Traffic Signal)
  9. Rio Linda Boulevard at Roanoke Avenue (Rectangular Rapid Flashing Beacon)

I haven’t had a chance to look at each of these proposals, though I will note that the city traffic engineers love to install traffic signals. At $100K to $500K per intersection, these are major investments. Many of the new signals the city has installed, for example on 5th Street and S Street, are unneeded, and waste of money. They have also converted a number of pedestrian signals from auto-recall (the pedestrian signal comes on at every signal cycle) to beg buttons (the person walking or rolling must activate the sensor, or the pedestrians signal will never come on). The city has a number of unnecessary signals, 60 in the central city alone. Maybe a one-for-one program is called for, install a new signal, take out an existing signal.

I don’t trust city traffic engineers. They label projects as safety projects for walkers and bicyclist, when they are really motor vehicle infrastructure projects. So-called pedestrian and bicyclist safety projects are often motor vehicle enhancements in disguise.

I cross 16th Street at D Street several times a week on bicycle, and occasionally walking, most often to access the American River bike trail via Sacramento Northern path over the river. Yes, I have to wait for a gap in traffic on 16th Street, which sometimes takes a while. But rarely longer than I would have to wait for a traffic signal, given that the arterial street (16th Street) always has a long green and the cross street (D Street) has a short green. I think that funds would be better spent slowing motor vehicle traffic on 16th Street, or adding bike facilities to 16th Street, or reducing the travel lanes on 16th Street, which is a four-lane traffic sewer. Traffic signals do not calm traffic. They irritate drivers, and cause them to quickly accelerate out of the signal to make up for time lost at the signal. They may allow for safer pedestrian crossing, or at least would if red light running were not an epidemic in Sacramento. The fact is, many drivers do not stop for red lights, and certainly don’t stop for people walking in crosswalks. Measures other than traffic signals are necessary to solve the issue.

diagram of traffic signal at 16th St & D St
traffic signal at 16th St & D St

The proposal for an RRFB (Rectangular Rapid Flashing Beacon) for Rio Linda Blvd at Roanoke Avenue is inappropriate. The posted speed limit in this section of Rio Linda Blvd is 40 mph, meaning that actual speeds are more like 50 mph. This is too fast for an RRFB to have any effect on drivers. Even at slower speeds drivers often ignore RRFBs. If there is to be a safe crossing at Roanoke, there must be a HAWK signal, or a full traffic signal. Again, funds would be better expended slowing traffic on Rio Linda. At this time, there is no connection between Roanoke Avenue and the Sacramento Northern Bike Trail, so it isn’t clear why this location has been picked for a signal.

diagram for RRFB for Rio Linda Blvd & Roanoke Ave
RRFB for Rio Linda Blvd & Roanoke Ave

I will leave it to others to examine the other seven locations. Are signals needed? Are they the right kind of signal for the context, particularly the speed and volume of motor vehicle traffic? Are there projects that would improve safety for walkers and bicyclists more than expensive traffic signals? Are these the best locations, the ones that best serve routes of travel for walkers and bicyclists? I have doubts that these questions were considered.

Note: Readers Sean Rogers has suggested a better, and less expensive, solution for Monroe and Latham, in comments. The solution may be calming traffic, not just installing a signal.