5 Levels of Autonomy (L1 and L2)

In order to keep everyone more or less on the same page, the Society of Automotive Engineers (SAE) has developed a convenient 5 level nomenclature to define the different levels of autonomy within the self-driving car industry. The chart above shows the 5 levels and also level zero which is no autonomy at all.

This week we will just discuss level 1 and 2 because they together form what is known as ADAS or Advanced Driver Assistance System. Almost all modern cars on the road today employ some amount of L1 or L2 level autonomy. It is often marketed under names such as “Cadillac Super Cruise” or “Subaru EyeSight”. The distinction between L1 and L2 is not so important but one can think of L1 as driver assist functions that have been available for decades such as basic cruise control, anti-lock brakes and stability control. L2 on the other hand are more recent features (introduced in the last decade or so) such as adaptive cruise control (speed up or slow down vehicle based on traffic flow), lane departure warning, blind-spot detection, parking assistance and autonomous emergency braking.

L2 is sometimes referred to as the “feet-off” stage of autonomy since with adaptive cruise control you don’t need to accelerate or brake for stretches of time. However, L1 and L2 technologies are almost passe now since every major manufacturer has the technology and it is on its way to becoming ubiquitous. All the marketing hype is around the next stages of autonomy which we will discuss next week.

Host CPU Offload Product Features Summary

wdt_ID Speed 1G 10G 10G 10G 10G/40G 10G/40G 100G 100G 100G
1 Model 4Ku 20ku 40ku 40kq 80ku ATLAS-1100 Service Node ANIC-200KFlex ANIC-100Kq ANIC-200Kq
2 Port/Type 4X1G SFP 2X10G SFP+ 4X10G SFP+ 1X40G QSFP+ 4X10G SFP+ 2X40G QSFP+ 8X10G SFP+ 4x10G SFP+ 1x40G QSFP+ 2x100G QSFP28 2x40G QSFP28 1X100G QSFP28 2X100G QSFP28
3 PCIe Interface Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x8 Gen3 x16 Gen3 x16 Gen3 x16
4 Dimensions(H x L inches) 4.25 x 6.5   4.25 x 6.25 4.25 x 6.25 4.25 x 6.25 4.25 x 6.25 1.75 x12.28x14 4.25 x 6.5 4.25 x 10.5 4.25 x 10.5
5 Memory 32MB 4G 4G 4G 4G 16/32G 8G 12G 12G
6 Timestamp 5.7 nS 5.7 nS 5.7 nS 5.7 nS 5.7 nS 5.7 nS 4 nS 4 nS 4 nS
7 100% Packet
8 Gigamon, AristaTimestamp
9 Packet Merging
10 Packet Parsing

About Accolade

Accolade is the technology leader in FPGA-based Host CPU Offload and 100% Packet Capture PCIe NIC’s and Scalable 1U Platforms. Accolade’s line of 1-100GE products enable 100% packet capture, flow classification, flow shunting, deduplication, packet filtering and more. Our customers are global leaders in network monitoring & cybersecurity applications as well as in the network test and measurement, telecom and video stream monitoring markets.

FPGA Acceleration Features

100% Packet Capture | Flow Classification | Flow Shunting | Precise Time Stamping | Packet Merging | Packet Slicing | Packet Parsing | Packet Filtering | Deduplication | Host Packet Buffer | Packet Steering | Direct Memory Access (DMA) | Statistics (RMON1)

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