When it comes to regional roads in Russia, many drivers are faced with confusion in the designations and names. Highway 46K-8400 is one of those routes that raises questions even among experienced motorists. Despite its status as a regional road, it plays an important role in the transport infrastructure of the Moscow region, connecting key settlements and providing alternative routes to bypass busy highways.
In this article we will figure out what the road is officially called 46K-8400, what route it has, what coverage features and restrictions await drivers in 2026. You will also learn why this route is often mentioned in the context of repair work and what alternative routes can be used when closing areas. Information is based on current data Rosavtodor and local administrations, therefore it will be useful both for residents of the region and for transit drivers.
The official name of the road is 46K-8400
According to the classifier of public roads, the designation 46K-8400 deciphered as follows:
- 📌 46 — code of the Moscow region (all regional roads in the region begin with this number).
- 📌 K — road category (regional, not federal).
- 📌 8400 — serial number in the register.
However, this road also has unofficial nameswhich are used by local residents and navigators:
- 🗺️ "Dmitrovskoe highway - A104" (areas adjacent to these highways).
- 🗺️ "Dmitrov bypass" (due to the location near the city of Dmitrov).
- 🗺️ "Old Kaluga Road" (historical name of some areas).
It is important to understand that in official documents (decrees of the government of the Moscow region, Rosavtodor schemes) the road is indicated exclusively as 46K-8400. Any other names are colloquial or historical variants and have no legal force. For example, in the MoD government decree No. 123/9 of 2023, the road is mentioned only by its code designation.
Road route 46K-8400: where does it come from and where does it lead?
Route 46K-8400 passes through the territory Dmitrovsky urban district Moscow region and connects several key points:
| Starting point | Destination | Length | Main settlements |
|---|---|---|---|
Crossroads with A104 (Moscow Big Ring) |
City of Dmitrov | ~18 km | Dmitrov, Orudevo, Podyachevo |
| Dmitrov (Professionalnaya St.) | Crossroads with P113 (Rogachevskoe highway) |
~12 km | Ilyinskoye, Dedenevo |
| Branch to the village. Orudevo | Rural roads of local importance | ~5 km | Orudevo, Nekrasovsky |
The peculiarity of the route is its nonlinearity. The road is not a straight route, but consists of several sections that connect different directions. For example, one of the sections serves as a bypass for the city of Dmitrov, allowing you to avoid traffic jams on the central streets. Another plot is used as an access road to industrial zones and agricultural enterprises.
It's important to note that 46K-8400 intersects with the federal highway A104 (Moscow Big Ring), which makes it important for transit traffic. However, this often causes congestion at intersections, especially during rush hours. Local drivers recommend using navigators with traffic tracking functionality, for example, Yandex.Maps or Google Mapsto avoid problem areas.
If you are driving from Moscow towards Dmitrov along A104, the exit at 46K-8400 will be immediately after the traffic police post at the turn to Orudyevo. Follow the sign "Dmitrov (detour)".
Condition of the coating and repair work in 2026
According to GKU MO "Mosoblavtodor" for the first quarter of 2026, road 46K-8400 is in satisfactory condition, but has several problem areas:
- ⚠️ Km 3–5 (from the exit from A104 to Orudyevo): pothole repairs, unevenness after the winter period.
- ⚠️ Km 10–12 (entrance to Dmitrov): narrowed to one lane due to roadside repairs.
- ⚠️ Km 15–17 (intersection with P113): no markings, difficult turn for trucks.
The following works are planned for 2026:
- 🛠️ April–May: major repairs of the section from Dmitrov to Dedenevo (replacing asphalt, strengthening roadsides).
- 🛠️ June–July: installation of new road signs and markings at the junction with the A104.
- 🛠️ August–September: repair of the bridge over the Yakhroma River (weight limit up to 20 tons).
⚠️ Attention: From May 15 to September 30, 2026, on the section km 8–10 there will be one way traffic due to renovation. The detour is organized through the street. Station in Dmitrov. Information about changes in traffic patterns will be duplicated on the website Mosoblavtodora.
To check the current state of the road you can use:
- 📱 Official portal "Roads of the Moscow Region" (interactive map with repair marks).
- 📱 Application "Roads of Russia" (displays traffic jams and accidents in real time).
- 📱 Groups on social networks, for example, "Accidents and traffic jams in the Dmitrov region" on VKontakte.
Restrictions and traffic rules on 46K-8400
road 46K-8400 applies to roads III technical category, which imposes the following restrictions:
| Parameter | Limitation | Fine for violation (2026) |
|---|---|---|
| Maximum speed | 70 km/h (outside populated areas), 60 km/h (within Dmitrov) | 500–1500 ₽ (Article 12.9 of the Administrative Code) |
| Weight control | Up to 11.5 tons per axle (on the section km 15–17 - up to 6 tons due to the bridge) | 5,000–10,000 ₽ (Article 12.21.1 of the Administrative Code) |
| Vehicle height | No more than 4 m (due to the overpass at km 7) | 1000–2000 ₽ |
| Stop/parking | Prohibited on roadsides in the section km 3–5 (sign 3.27) | 1500–3000 ₽ (Article 12.19 of the Administrative Code) |
Particular attention should be paid truck control. Raids are regularly carried out on the road traffic police and Rostransnadzor to detect overload. In 2023, more than 200 truck drivers were fined for exceeding the maximum weight limit in this area. If your vehicle weighs more than 12 tonnes, it is recommended to use an alternative route via A104 or M10.
⚠️ Attention: On the section km 15–17 (bridge over Yakhroma) from June 1 to October 1, 2026 a complete ban on the movement of road trains longer than 12 meters. The fine for violation is 5,000 rubles.
Also valid on the road seasonal restrictions:
- 🚜 From November 1 to April 1, the passage of agricultural machinery (tractors, combines) without special permission is prohibited.
- ❄️ During the winter period (December–February), the use of winter tires or studded tires is mandatory.
Alternative routes: how to replace 46K-8400?
If the road 46K-8400 is closed for renovation or you want to avoid traffic jams, you can use the following alternatives:
A104 (Moscow Big Ring) → exit to P113|M10 (Russia) → exit to Dmitrovskoye Shosse|Ul. Professional (Dmitrov) → st. Moskovskaya → P113|Detour through the village. Dedenevo (for cars)-->
The choice of route depends on your goal:
- 🚗 For passenger cars: optimal detour through
st. Professionalin Dmitrov. This route is shorter but can be busy on weekdays. - 🚛 For trucks: better use
A104, despite the large length, since there are no weight restrictions. - 🏡 For local residents: convenient route through
s. Dedenevo, but the road there is narrow and without lighting.
Comparison of alternative routes:
| Route | Length | Travel time (without traffic jams) | Features |
|---|---|---|---|
| A104 → P113 | 25 km | 30–40 min | Federal road, good coverage, toll sections |
| M10 → Dmitrovskoe highway | 35 km | 45–60 min | High congestion, tolls on M10 |
| St. Professional → P113 | 10 km | 15–25 min | Narrow streets, height limit (3.5 m) |
If your goal is to avoid traffic jams on 46K-8400, use a navigator with the "Avoid Congestion" function. The best options for this are Waze or Yandex.Navigator, as they take into account data from other drivers in real time.
Common problems and how to avoid them
Drivers who regularly use the road 46K-8400, face typical problems:
- 🚧 Unexpected repairs: work often begins without prior notice. It is recommended to check the site Mosoblavtodora the day before the trip.
- 🚓 Frequent traffic police posts: especially on the section of km 3–5 (checking speed and overload). Obey the 70 km/h limit.
- 🌳 Falling trees: in the autumn-winter period, branches often fall on the road, especially in the area of 10–12 km. Be careful in windy conditions.
- 🚜 Agricultural machinery: In spring and autumn, tractors and combines appear on the road, moving at a speed of 20–30 km/h.
To minimize risks, follow these tips:
- 🔹 Use daytime running lights even during the day - there are many turns on the road with limited visibility.
- 🔹 Hold distance of at least 50 meters from the vehicle ahead (due to potholes and uneven surfaces, the braking distance increases).
- 🔹 If you are driving at night, reduce your speed to 50 km/h — there is no lighting on the road.
What to do if you are stopped by a traffic police inspector at 46K-8400?
1. Present documents (licence, vehicle insurance, compulsory motor liability insurance policy).
2. If the inspector refers to a violation (for example, speeding), ask to see evidence (radar, video).
3. Strelka mobile systems often operate on the road 46K-8400, so information about the violation may arrive later by mail.
4. If you do not agree with the fine, you have 10 days to appeal through the website traffic police or court.
Prospects for the development of road 46K-8400
As part of the program "Safe and high-quality roads" the following improvements are planned for 2026–2026 for 46K-8400:
- 🚗 2026: reconstruction of the bridge over Yakhroma (increasing capacity to 40 tons).
- 🚗 2026: construction of a new junction at the junction with the A104 (reducing traffic jams).
- 🚗 2026: widening the road to 4 lanes on the section km 0–5.
A project for assigning federal status to the road, which will attract additional funding. However, this requires changing the classifier and agreeing with Rosavtodor, so the process may drag on until 2027.
If these plans are realized, 46K-8400 will become an important transport artery for cargo transportation between Moscow and the northern regions. In the meantime, the road remains regional, and its condition depends on the budget of the Moscow region.
Follow the news on the website government of the Moscow region — all changes to road infrastructure are published there, including 46K-8400.
FAQ: Frequently asked questions about the road 46K-8400
🔹 Why is road 46K-8400 often closed for repairs?
The road has a high level of wear and tear due to heavy truck traffic and insufficient funding for maintenance. In 2023, only 60% of the required amount was allocated for its repair, so the work will take years.
🔹 Is it possible to ride 46K-8400 on a motorcycle?
Yes, but you need to take into account that on the 10–12 km section there are often potholes and gravel after repairs. It is recommended to reduce speed to 50 km/h and wear protective equipment.
🔹 Which navigators show traffic jams on this road better?
Yandex.Navigator and Waze most accurately reflect the situation on 46K-8400, since they take into account data from users. Google Maps Sometimes there is a delay in updating information about repairs.
🔹Where can I find out about planned road closures?
Official notices are published on the following websites:
Information is also duplicated in local media, for example, in the newspaper "Dmitrovskie news".
🔹 Why is there no lighting on the road?
Sections 46K-8400 pass through sparsely populated areas where installing lighting is not economically feasible. Drivers are advised to use high beams (switching to low beams when passing oncoming traffic) and drive with extreme caution in the dark.